1038948921 has 24 divisors (see below), whose sum is σ = 1535582880. Its totient is φ = 676714176.

The previous prime is 1038948881. The next prime is 1038948941. The reversal of 1038948921 is 1298498301.

It is not a de Polignac number, because 1038948921 - 2⁹ = 1038948409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1038948941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62910 + ... + 77688.

It is an arithmetic number, because the mean of its divisors is an integer number (63982620).

Almost surely, 2^1038948921 is an apocalyptic number.

It is an amenable number.

1038948921 is a deficient number, since it is larger than the sum of its proper divisors (496633959).

1038948921 is a wasteful number, since it uses less digits than its factorization.

1038948921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14965 (or 14962 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1038948921 is about 32232.7305855399. The cubic root of 1038948921 is about 1012.8179712797.

The spelling of 1038948921 in words is "one billion, thirty-eight million, nine hundred forty-eight thousand, nine hundred twenty-one".