1097389755 has 128 divisors (see below), whose sum is σ = 2448230400. Its totient is φ = 453081600.

The previous prime is 1097389721. The next prime is 1097389781. The reversal of 1097389755 is 5579837901.

It is not a de Polignac number, because 1097389755 - 2²⁶ = 1030280891 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2380225 + ... + 2380685.

It is an arithmetic number, because the mean of its divisors is an integer number (19126800).

Almost surely, 2^1097389755 is an apocalyptic number.

1097389755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1097389755 is an abundant number, since it is smaller than the sum of its proper divisors (1350840645).

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

1097389755 is a wasteful number, since it uses less digits than its factorization.

1097389755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The square root of 1097389755 is about 33126.8736073901. The cubic root of 1097389755 is about 1031.4629523861.

The spelling of 1097389755 in words is "one billion, ninety-seven million, three hundred eighty-nine thousand, seven hundred fifty-five".