913621901 has 16 divisors (see below), whose sum is σ = 947576448. Its totient is φ = 880300800.

The previous prime is 913621883. The next prime is 913621909. The reversal of 913621901 is 109126319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913621901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913621909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1746626 + ... + 1747148.

It is an arithmetic number, because the mean of its divisors is an integer number (59223528).

Almost surely, 2^913621901 is an apocalyptic number.

It is an amenable number.

913621901 is a deficient number, since it is larger than the sum of its proper divisors (33954547).

913621901 is a wasteful number, since it uses less digits than its factorization.

913621901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 913621901 is about 30226.1790671596. The cubic root of 913621901 is about 970.3360514168.

The spelling of 913621901 in words is "nine hundred thirteen million, six hundred twenty-one thousand, nine hundred one".