1899924699312 has 160 divisors (see below), whose sum is σ = 5536256648960. Its totient is φ = 623721669120.

The previous prime is 1899924699199. The next prime is 1899924699317. The reversal of 1899924699312 is 2139964299981.

1899924699312 is a `hidden beast` number, since 18 + 99 + 92 + 46 + 99 + 312 = 666.

It is a super-3 number, since 3×1899924699312³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1899924699317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21747783 + ... + 21834969.

It is an arithmetic number, because the mean of its divisors is an integer number (34601604056).

Almost surely, 2^{1899924699312} is an apocalyptic number.

1899924699312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1899924699312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2768128324480).

1899924699312 is an abundant number, since it is smaller than the sum of its proper divisors (3636331949648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1899924699312 is a wasteful number, since it uses less digits than its factorization.

1899924699312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87968 (or 87956 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 72.

The spelling of 1899924699312 in words is "one trillion, eight hundred ninety-nine billion, nine hundred twenty-four million, six hundred ninety-nine thousand, three hundred twelve".