1097381568 has 56 divisors (see below), whose sum is σ = 2965289472. Its totient is φ = 358008064.

The previous prime is 1097381567. The next prime is 1097381581. The reversal of 1097381568 is 8651837901.

It is a super-2 number, since 2×1097381568² = 2408492611572277248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1097381561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51780 + ... + 69827.

Almost surely, 2^1097381568 is an apocalyptic number.

It is an amenable number.

1097381568 is an abundant number, since it is smaller than the sum of its proper divisors (1867907904).

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

1097381568 is a wasteful number, since it uses less digits than its factorization.

1097381568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121669 (or 121659 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 1097381568 is about 33126.7500367905. The cubic root of 1097381568 is about 1031.4603873272.

The spelling of 1097381568 in words is "one billion, ninety-seven million, three hundred eighty-one thousand, five hundred sixty-eight".