130509157 has 4 divisors (see below), whose sum is σ = 137378080. Its totient is φ = 123640236.

The previous prime is 130509133. The next prime is 130509167. The reversal of 130509157 is 751905031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130509157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130509167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434433 + ... + 3434470.

It is an arithmetic number, because the mean of its divisors is an integer number (34344520).

Almost surely, 2^130509157 is an apocalyptic number.

It is an amenable number.

130509157 is a deficient number, since it is larger than the sum of its proper divisors (6868923).

130509157 is an equidigital number, since it uses as much as digits as its factorization.

130509157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868922.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 130509157 is about 11424.0604427673. The cubic root of 130509157 is about 507.2401957520.

The spelling of 130509157 in words is "one hundred thirty million, five hundred nine thousand, one hundred fifty-seven".