618213156 has 48 divisors (see below), whose sum is σ = 1576931328. Its totient is φ = 186944800.

The previous prime is 618213139. The next prime is 618213163. The reversal of 618213156 is 651312816.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61741 + ... + 71051.

It is an arithmetic number, because the mean of its divisors is an integer number (32852736).

Almost surely, 2^618213156 is an apocalyptic number.

618213156 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

618213156 is an abundant number, since it is smaller than the sum of its proper divisors (958718172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618213156 is a wasteful number, since it uses less digits than its factorization.

618213156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832 (or 9830 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 618213156 is about 24863.8926155982. The cubic root of 618213156 is about 851.8819459962.

The spelling of 618213156 in words is "six hundred eighteen million, two hundred thirteen thousand, one hundred fifty-six".