913861620431 has 8 divisors (see below), whose sum is σ = 915213457344. Its totient is φ = 912510144000.

The previous prime is 913861620407. The next prime is 913861620433. The reversal of 913861620431 is 134026168319.

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

It is a cyclic number.

It is not a de Polignac number, because 913861620431 - 2¹⁸ = 913861358287 is a prime.

It is a super-2 number, since 2×913861620431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913861620433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5213591 + ... + 5386023.

It is an arithmetic number, because the mean of its divisors is an integer number (114401682168).

Almost surely, 2^913861620431 is an apocalyptic number.

913861620431 is a deficient number, since it is larger than the sum of its proper divisors (1351836913).

913861620431 is a wasteful number, since it uses less digits than its factorization.

913861620431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180241.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 913861620431 in words is "nine hundred thirteen billion, eight hundred sixty-one million, six hundred twenty thousand, four hundred thirty-one".