921330157 has 8 divisors (see below), whose sum is σ = 1005491232. Its totient is φ = 837236400.

The previous prime is 921330139. The next prime is 921330161. The reversal of 921330157 is 751033129.

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

It is not a de Polignac number, because 921330157 - 2¹⁵ = 921297389 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 (921330127) 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, 14307 + ... + 45247.

It is an arithmetic number, because the mean of its divisors is an integer number (125686404).

Almost surely, 2^921330157 is an apocalyptic number.

It is an amenable number.

921330157 is a deficient number, since it is larger than the sum of its proper divisors (84161075).

921330157 is a wasteful number, since it uses less digits than its factorization.

921330157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33659.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 921330157 is about 30353.4208451041. The cubic root of 921330157 is about 973.0573308749.

The spelling of 921330157 in words is "nine hundred twenty-one million, three hundred thirty thousand, one hundred fifty-seven".