618052331 has 4 divisors (see below), whose sum is σ = 665594832. Its totient is φ = 570509832.

The previous prime is 618052319. The next prime is 618052333. The reversal of 618052331 is 133250816.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618052331 is a prime.

It is a super-2 number, since 2×618052331² = 763977367709067122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 618052294 and 618052303.

It is not an unprimeable number, because it can be changed into a prime (618052333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23771231 + ... + 23771256.

It is an arithmetic number, because the mean of its divisors is an integer number (166398708).

Almost surely, 2^618052331 is an apocalyptic number.

618052331 is a deficient number, since it is larger than the sum of its proper divisors (47542501).

618052331 is a wasteful number, since it uses less digits than its factorization.

618052331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47542500.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 618052331 is about 24860.6582978006. The cubic root of 618052331 is about 851.8080686749.

The spelling of 618052331 in words is "six hundred eighteen million, fifty-two thousand, three hundred thirty-one".