130999645 has 16 divisors (see below), whose sum is σ = 185453568. Its totient is φ = 86929920.

The previous prime is 130999639. The next prime is 130999667. The reversal of 130999645 is 546999031.

It is not a de Polignac number, because 130999645 - 2¹⁵ = 130966877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130999595 and 130999604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59284 + ... + 61453.

It is an arithmetic number, because the mean of its divisors is an integer number (11590848).

Almost surely, 2^130999645 is an apocalyptic number.

It is an amenable number.

130999645 is a deficient number, since it is larger than the sum of its proper divisors (54453923).

130999645 is a wasteful number, since it uses less digits than its factorization.

130999645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120780.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 130999645 is about 11445.5076340021. The cubic root of 130999645 is about 507.8748490451.

The spelling of 130999645 in words is "one hundred thirty million, nine hundred ninety-nine thousand, six hundred forty-five".