618927971424 has 96 divisors (see below), whose sum is σ = 1857230081280. Its totient is φ = 176794071552.

The previous prime is 618927971419. The next prime is 618927971437. The reversal of 618927971424 is 424179729816.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×618927971424² (a number of 24 digits) contains 22 as substring.

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, 2742762 + ... + 2959830.

It is an arithmetic number, because the mean of its divisors is an integer number (19346146680).

Almost surely, 2^618927971424 is an apocalyptic number.

It is an amenable number.

618927971424 is an abundant number, since it is smaller than the sum of its proper divisors (1238302109856).

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

618927971424 is a wasteful number, since it uses less digits than its factorization.

618927971424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221332 (or 221324 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 60.

The spelling of 618927971424 in words is "six hundred eighteen billion, nine hundred twenty-seven million, nine hundred seventy-one thousand, four hundred twenty-four".