913610981 has 8 divisors (see below), whose sum is σ = 936048960. Its totient is φ = 891227232.

The previous prime is 913610977. The next prime is 913611053. The reversal of 913610981 is 189016319.

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 913610981 - 2² = 913610977 is a prime.

It is a super-2 number, since 2×913610981² = 1669370049207564722, which 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 (913610921) 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, 21656 + ... + 47918.

It is an arithmetic number, because the mean of its divisors is an integer number (117006120).

Almost surely, 2^913610981 is an apocalyptic number.

It is an amenable number.

913610981 is a deficient number, since it is larger than the sum of its proper divisors (22437979).

913610981 is a wasteful number, since it uses less digits than its factorization.

913610981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27115.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 913610981 is about 30225.9984285052. The cubic root of 913610981 is about 970.3321854441.

The spelling of 913610981 in words is "nine hundred thirteen million, six hundred ten thousand, nine hundred eighty-one".