1097643408 has 40 divisors (see below), whose sum is σ = 2867450400. Its totient is φ = 361768704.

The previous prime is 1097643401. The next prime is 1097643419. The reversal of 1097643408 is 8043467901.

It is a super-2 number, since 2×1097643408² = 2409642102251708928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1097643408.

It is not an unprimeable number, because it can be changed into a prime (1097643401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 124198 + ... + 132741.

It is an arithmetic number, because the mean of its divisors is an integer number (71686260).

Almost surely, 2^1097643408 is an apocalyptic number.

It is an amenable number.

1097643408 is an abundant number, since it is smaller than the sum of its proper divisors (1769806992).

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

1097643408 is a wasteful number, since it uses less digits than its factorization.

1097643408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257039 (or 257033 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1097643408 is about 33130.7018941646. The cubic root of 1097643408 is about 1031.5424177767.

The spelling of 1097643408 in words is "one billion, ninety-seven million, six hundred forty-three thousand, four hundred eight".