921982738 has 32 divisors (see below), whose sum is σ = 1480550400. Its totient is φ = 429594000.

The previous prime is 921982717. The next prime is 921982751. The reversal of 921982738 is 837289129.

It is a junction number, because it is equal to n+sod(n) for n = 921982691 and 921982700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541813 + ... + 543511.

It is an arithmetic number, because the mean of its divisors is an integer number (46267200).

Almost surely, 2^921982738 is an apocalyptic number.

921982738 is a deficient number, since it is larger than the sum of its proper divisors (558567662).

921982738 is a wasteful number, since it uses less digits than its factorization.

921982738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022.

The product of its digits is 435456, while the sum is 49.

The square root of 921982738 is about 30364.1686532004. The cubic root of 921982738 is about 973.2870164935.

The spelling of 921982738 in words is "nine hundred twenty-one million, nine hundred eighty-two thousand, seven hundred thirty-eight".