1899558485952 has 112 divisors (see below), whose sum is σ = 5188836390912. Its totient is φ = 612666915840.

The previous prime is 1899558485941. The next prime is 1899558485959. The reversal of 1899558485952 is 2595848559981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899558485959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46149093 + ... + 46190235.

Almost surely, 2^{1899558485952} is an apocalyptic number.

1899558485952 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 1899558485952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2594418195456).

1899558485952 is an abundant number, since it is smaller than the sum of its proper divisors (3289277904960).

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

1899558485952 is a wasteful number, since it uses less digits than its factorization.

1899558485952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48946 (or 48936 counting only the distinct ones).

The product of its digits is 1866240000, while the sum is 78.

The spelling of 1899558485952 in words is "one trillion, eight hundred ninety-nine billion, five hundred fifty-eight million, four hundred eighty-five thousand, nine hundred fifty-two".