618941031 has 4 divisors (see below), whose sum is σ = 825254712. Its totient is φ = 412627352.

The previous prime is 618941027. The next prime is 618941033. The reversal of 618941031 is 130149816.

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

It is a cyclic number.

It is not a de Polignac number, because 618941031 - 2² = 618941027 is a prime.

It is a super-2 number, since 2×618941031² = 766175999710685922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 618940983 and 618941001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618941033) 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, 103156836 + ... + 103156841.

It is an arithmetic number, because the mean of its divisors is an integer number (206313678).

Almost surely, 2^618941031 is an apocalyptic number.

618941031 is a deficient number, since it is larger than the sum of its proper divisors (206313681).

618941031 is a wasteful number, since it uses less digits than its factorization.

618941031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206313680.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 618941031 is about 24878.5254989117. The cubic root of 618941031 is about 852.2161459256.

The spelling of 618941031 in words is "six hundred eighteen million, nine hundred forty-one thousand, thirty-one".