38463649791 has 16 divisors (see below), whose sum is σ = 58780195584. Its totient is φ = 21915883584.

The previous prime is 38463649787. The next prime is 38463649867. The reversal of 38463649791 is 19794636483.

It is not a de Polignac number, because 38463649791 - 2² = 38463649787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38463649771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2631910 + ... + 2646483.

It is an arithmetic number, because the mean of its divisors is an integer number (3673762224).

Almost surely, 2^38463649791 is an apocalyptic number.

38463649791 is a deficient number, since it is larger than the sum of its proper divisors (20316545793).

38463649791 is a wasteful number, since it uses less digits than its factorization.

38463649791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278750.

The product of its digits is 23514624, while the sum is 60.

The spelling of 38463649791 in words is "thirty-eight billion, four hundred sixty-three million, six hundred forty-nine thousand, seven hundred ninety-one".