38192080921 has 8 divisors (see below), whose sum is σ = 38927292264. Its totient is φ = 37463838720.

The previous prime is 38192080877. The next prime is 38192080931. The reversal of 38192080921 is 12908029183.

It can be written as a sum of positive squares in 4 ways, for example, as 1916688400 + 36275392521 = 43780^2 + 190461^2 .

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 38192080921 - 2⁷ = 38192080793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38192080931) 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, 1731220 + ... + 1753141.

It is an arithmetic number, because the mean of its divisors is an integer number (4865911533).

Almost surely, 2^38192080921 is an apocalyptic number.

It is an amenable number.

38192080921 is a deficient number, since it is larger than the sum of its proper divisors (735211343).

38192080921 is a wasteful number, since it uses less digits than its factorization.

38192080921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484571.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 38192080921 in words is "thirty-eight billion, one hundred ninety-two million, eighty thousand, nine hundred twenty-one".