1097971875 has 288 divisors, whose sum is σ = 2744824320. Its totient is φ = 421200000.

The previous prime is 1097971837. The next prime is 1097971937. The reversal of 1097971875 is 5781797901.

It is not a de Polignac number, because 1097971875 - 2⁹ = 1097971363 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 84459369 + ... + 84459381.

It is an arithmetic number, because the mean of its divisors is an integer number (9530640).

Almost surely, 2^1097971875 is an apocalyptic number.

1097971875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1097971875 is an abundant number, since it is smaller than the sum of its proper divisors (1646852445).

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

1097971875 is an equidigital number, since it uses as much as digits as its factorization.

1097971875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 54.

The square root of 1097971875 is about 33135.6586625345. The cubic root of 1097971875 is about 1031.6453029969.

The spelling of 1097971875 in words is "one billion, ninety-seven million, nine hundred seventy-one thousand, eight hundred seventy-five".