1615972097 has 12 divisors (see below), whose sum is σ = 1727118720. Its totient is φ = 1511515512.

The previous prime is 1615972093. The next prime is 1615972109. The reversal of 1615972097 is 7902795161.

It is not a de Polignac number, because 1615972097 - 2² = 1615972093 is a prime.

It is a super-2 number, since 2×1615972097² = 5222731636565154818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1615972091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188 + ... + 56850.

It is an arithmetic number, because the mean of its divisors is an integer number (143926560).

Almost surely, 2^1615972097 is an apocalyptic number.

It is an amenable number.

1615972097 is a deficient number, since it is larger than the sum of its proper divisors (111146623).

1615972097 is an equidigital number, since it uses as much as digits as its factorization.

1615972097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56780 (or 56761 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 1615972097 is about 40199.1554264514. The cubic root of 1615972097 is about 1173.4861075302.

The spelling of 1615972097 in words is "one billion, six hundred fifteen million, nine hundred seventy-two thousand, ninety-seven".