130699945 has 4 divisors (see below), whose sum is σ = 156839940. Its totient is φ = 104559952.

The previous prime is 130699931. The next prime is 130699951. The reversal of 130699945 is 549996031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549996031 = 13 ⋅42307387.

It can be written as a sum of positive squares in 2 ways, for example, as 101062809 + 29637136 = 10053^2 + 5444^2 .

It is a cyclic number.

It is not a de Polignac number, because 130699945 - 2⁵ = 130699913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130699895 and 130699904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13069990 + ... + 13069999.

It is an arithmetic number, because the mean of its divisors is an integer number (39209985).

Almost surely, 2^130699945 is an apocalyptic number.

It is an amenable number.

130699945 is a deficient number, since it is larger than the sum of its proper divisors (26139995).

130699945 is an equidigital number, since it uses as much as digits as its factorization.

130699945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26139994.

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

The square root of 130699945 is about 11432.4076641799. The cubic root of 130699945 is about 507.4872492287.

The spelling of 130699945 in words is "one hundred thirty million, six hundred ninety-nine thousand, nine hundred forty-five".