1097161245 has 24 divisors (see below), whose sum is σ = 1902709536. Its totient is φ = 584856288.

The previous prime is 1097161237. The next prime is 1097161309. The reversal of 1097161245 is 5421617901.

It is not a de Polignac number, because 1097161245 - 2³ = 1097161237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106074 + ... + 115956.

It is an arithmetic number, because the mean of its divisors is an integer number (79279564).

Almost surely, 2^1097161245 is an apocalyptic number.

1097161245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1097161245 is a deficient number, since it is larger than the sum of its proper divisors (805548291).

1097161245 is a wasteful number, since it uses less digits than its factorization.

1097161245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12361 (or 12358 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1097161245 is about 33123.4244153590. The cubic root of 1097161245 is about 1031.3913534062.

The spelling of 1097161245 in words is "one billion, ninety-seven million, one hundred sixty-one thousand, two hundred forty-five".