1531930497 has 16 divisors (see below), whose sum is σ = 2090095488. Its totient is φ = 997692800.

The previous prime is 1531930493. The next prime is 1531930501. The reversal of 1531930497 is 7940391351.

It is an interprime number because it is at equal distance from previous prime (1531930493) and next prime (1531930501).

It is a cyclic number.

It is not a de Polignac number, because 1531930497 - 2² = 1531930493 is a prime.

It is a super-2 number, since 2×1531930497² = 4693622095277334018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1531930493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16372 + ... + 57722.

It is an arithmetic number, because the mean of its divisors is an integer number (130630968).

Almost surely, 2^1531930497 is an apocalyptic number.

It is an amenable number.

1531930497 is a deficient number, since it is larger than the sum of its proper divisors (558164991).

1531930497 is a wasteful number, since it uses less digits than its factorization.

1531930497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41640.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 1531930497 is about 39139.8837121420. The cubic root of 1531930497 is about 1152.7797899355.

The spelling of 1531930497 in words is "one billion, five hundred thirty-one million, nine hundred thirty thousand, four hundred ninety-seven".