618416961 has 8 divisors (see below), whose sum is σ = 824682144. Its totient is φ = 412214880.

The previous prime is 618416957. The next prime is 618416971. The reversal of 618416961 is 169614816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 618416961 - 2² = 618416957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (618416941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16570 + ... + 38876.

It is an arithmetic number, because the mean of its divisors is an integer number (103085268).

Almost surely, 2^618416961 is an apocalyptic number.

It is an amenable number.

618416961 is a deficient number, since it is larger than the sum of its proper divisors (206265183).

618416961 is a wasteful number, since it uses less digits than its factorization.

618416961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31551.

The product of its digits is 62208, while the sum is 42.

The square root of 618416961 is about 24867.9906908459. The cubic root of 618416961 is about 851.9755484067.

The spelling of 618416961 in words is "six hundred eighteen million, four hundred sixteen thousand, nine hundred sixty-one".