1097855892 has 72 divisors (see below), whose sum is σ = 3239099136. Its totient is φ = 306995904.

The previous prime is 1097855879. The next prime is 1097855909. The reversal of 1097855892 is 2985587901.

1097855892 is a `hidden beast` number, since 10 + 9 + 78 + 558 + 9 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34503 + ... + 58190.

It is an arithmetic number, because the mean of its divisors is an integer number (44987488).

Almost surely, 2^1097855892 is an apocalyptic number.

1097855892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1097855892 is an abundant number, since it is smaller than the sum of its proper divisors (2141243244).

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

1097855892 is a wasteful number, since it uses less digits than its factorization.

1097855892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92757 (or 92752 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The square root of 1097855892 is about 33133.9084926605. The cubic root of 1097855892 is about 1031.6089761616.

The spelling of 1097855892 in words is "one billion, ninety-seven million, eight hundred fifty-five thousand, eight hundred ninety-two".