618409272 has 64 divisors (see below), whose sum is σ = 1762901280. Its totient is φ = 179085312.

The previous prime is 618409243. The next prime is 618409307. The reversal of 618409272 is 272904816.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 618409272.

It is a congruent number.

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, 52993 + ... + 63600.

Almost surely, 2^618409272 is an apocalyptic number.

It is an amenable number.

618409272 is an abundant number, since it is smaller than the sum of its proper divisors (1144492008).

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

618409272 is a wasteful number, since it uses less digits than its factorization.

618409272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116632 (or 116628 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 618409272 is about 24867.8360940392. The cubic root of 618409272 is about 851.9720174195.

The spelling of 618409272 in words is "six hundred eighteen million, four hundred nine thousand, two hundred seventy-two".