618317956 has 9 divisors (see below), whose sum is σ = 1082143461. Its totient is φ = 309134112.

The previous prime is 618317939. The next prime is 618317963. The reversal of 618317956 is 659713816.

It is a happy number.

The square root of 618317956 is 24866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 80820100 + 537497856 = 8990^2 + 23184^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 43516 + ... + 55948.

Almost surely, 2^618317956 is an apocalyptic number.

618317956 is the 24866-th square number.

It is an amenable number.

618317956 is a deficient number, since it is larger than the sum of its proper divisors (463825505).

618317956 is an frugal number, since it uses more digits than its factorization.

618317956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24870 (or 12435 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The cubic root of 618317956 is about 851.9300805179.

The spelling of 618317956 in words is "six hundred eighteen million, three hundred seventeen thousand, nine hundred fifty-six".