1869413990400 has 1440 divisors, whose sum is σ = 7613939343360. Its totient is φ = 449622835200.

The previous prime is 1869413990369. The next prime is 1869413990449. The reversal of 1869413990400 is 40993149681.

It is a happy number.

1869413990400 is a `hidden beast` number, since 1 + 86 + 9 + 41 + 39 + 90 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14719795137 + ... + 14719795263.

Almost surely, 2^{1869413990400} is an apocalyptic number.

1869413990400 is a gapful number since it is divisible by the number (10) 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 1869413990400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3806969671680).

1869413990400 is an abundant number, since it is smaller than the sum of its proper divisors (5744525352960).

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

1869413990400 is an equidigital number, since it uses as much as digits as its factorization.

1869413990400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 1869413990400 in words is "one trillion, eight hundred sixty-nine billion, four hundred thirteen million, nine hundred ninety thousand, four hundred".