1899225996156 has 72 divisors (see below), whose sum is σ = 4983343170624. Its totient is φ = 609448141440.

The previous prime is 1899225996133. The next prime is 1899225996167. The reversal of 1899225996156 is 6516995229981.

1899225996156 is a `hidden beast` number, since 1 + 8 + 9 + 9 + 22 + 599 + 6 + 1 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9097395 + ... + 9303818.

It is an arithmetic number, because the mean of its divisors is an integer number (69213099592).

Almost surely, 2^{1899225996156} is an apocalyptic number.

It is an amenable number.

1899225996156 is an abundant number, since it is smaller than the sum of its proper divisors (3084117174468).

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

1899225996156 is a wasteful number, since it uses less digits than its factorization.

1899225996156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18401331 (or 18401326 counting only the distinct ones).

The product of its digits is 188956800, while the sum is 72.

The spelling of 1899225996156 in words is "one trillion, eight hundred ninety-nine billion, two hundred twenty-five million, nine hundred ninety-six thousand, one hundred fifty-six".