38133304491 has 4 divisors (see below), whose sum is σ = 50844405992. Its totient is φ = 25422202992.

The previous prime is 38133304463. The next prime is 38133304511. The reversal of 38133304491 is 19440333183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19440333183 = 3 ⋅6480111061.

It is not a de Polignac number, because 38133304491 - 2⁵ = 38133304459 is a prime.

It is a super-2 number, since 2×38133304491² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38133304291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6355550746 + ... + 6355550751.

It is an arithmetic number, because the mean of its divisors is an integer number (12711101498).

Almost surely, 2^38133304491 is an apocalyptic number.

38133304491 is a deficient number, since it is larger than the sum of its proper divisors (12711101501).

38133304491 is a wasteful number, since it uses less digits than its factorization.

38133304491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12711101500.

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 38133304491 in words is "thirty-eight billion, one hundred thirty-three million, three hundred four thousand, four hundred ninety-one".