38294890921 has 8 divisors (see below), whose sum is σ = 43766969984. Its totient is φ = 32823156960.

The previous prime is 38294890919. The next prime is 38294890967. The reversal of 38294890921 is 12909849283.

38294890921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38294890921 - 2¹ = 38294890919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38294590921) 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, 227701 + ... + 358381.

It is an arithmetic number, because the mean of its divisors is an integer number (5470871248).

Almost surely, 2^38294890921 is an apocalyptic number.

It is an amenable number.

38294890921 is a deficient number, since it is larger than the sum of its proper divisors (5472079063).

38294890921 is a wasteful number, since it uses less digits than its factorization.

38294890921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172551.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 38294890921 in words is "thirty-eight billion, two hundred ninety-four million, eight hundred ninety thousand, nine hundred twenty-one".