530117978 has 16 divisors (see below), whose sum is σ = 872504136. Its totient is φ = 240052800.

The previous prime is 530117957. The next prime is 530117983. The reversal of 530117978 is 879711035.

It can be written as a sum of positive squares in 4 ways, for example, as 421604089 + 108513889 = 20533^2 + 10417^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190973 + ... + 193728.

Almost surely, 2^530117978 is an apocalyptic number.

530117978 is a deficient number, since it is larger than the sum of its proper divisors (342386158).

530117978 is a wasteful number, since it uses less digits than its factorization.

530117978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384769.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 530117978 is about 23024.2910422884. The cubic root of 530117978 is about 809.3272766304.

The spelling of 530117978 in words is "five hundred thirty million, one hundred seventeen thousand, nine hundred seventy-eight".