38649007331 has 4 divisors (see below), whose sum is σ = 42162553464. Its totient is φ = 35135461200.

The previous prime is 38649007321. The next prime is 38649007333. The reversal of 38649007331 is 13370094683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38649007331 - 2²² = 38644813027 is a prime.

It is a super-2 number, since 2×38649007331² (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 (38649007333) 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, 1756773050 + ... + 1756773071.

It is an arithmetic number, because the mean of its divisors is an integer number (10540638366).

Almost surely, 2^38649007331 is an apocalyptic number.

38649007331 is a deficient number, since it is larger than the sum of its proper divisors (3513546133).

38649007331 is a wasteful number, since it uses less digits than its factorization.

38649007331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513546132.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 38649007331 in words is "thirty-eight billion, six hundred forty-nine million, seven thousand, three hundred thirty-one".