518672974 has 4 divisors (see below), whose sum is σ = 778009464. Its totient is φ = 259336486.

The previous prime is 518672927. The next prime is 518672983. The reversal of 518672974 is 479276815.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129668242 + ... + 129668245.

It is an arithmetic number, because the mean of its divisors is an integer number (194502366).

Almost surely, 2^518672974 is an apocalyptic number.

518672974 is a deficient number, since it is larger than the sum of its proper divisors (259336490).

518672974 is a wasteful number, since it uses less digits than its factorization.

518672974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259336489.

The product of its digits is 846720, while the sum is 49.

The square root of 518672974 is about 22774.3929447088. The cubic root of 518672974 is about 803.4605167381.

It can be divided in two parts, 51 and 8672974, that added together give a square (8673025 = 2945²).

The spelling of 518672974 in words is "five hundred eighteen million, six hundred seventy-two thousand, nine hundred seventy-four".