130609978 has 8 divisors (see below), whose sum is σ = 197746272. Its totient is φ = 64694556.

The previous prime is 130609961. The next prime is 130609979. The reversal of 130609978 is 879906031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (130609979) 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, 304950 + ... + 305377.

It is an arithmetic number, because the mean of its divisors is an integer number (24718284).

Almost surely, 2^130609978 is an apocalyptic number.

130609978 is a deficient number, since it is larger than the sum of its proper divisors (67136294).

130609978 is a wasteful number, since it uses less digits than its factorization.

130609978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610436.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 130609978 is about 11428.4722513554. The cubic root of 130609978 is about 507.3707799490.

The spelling of 130609978 in words is "one hundred thirty million, six hundred nine thousand, nine hundred seventy-eight".