381392711637 has 8 divisors (see below), whose sum is σ = 581169846336. Its totient is φ = 217938692352.

The previous prime is 381392711633. The next prime is 381392711639. The reversal of 381392711637 is 736117293183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381392711637 - 2² = 381392711633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381392711637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381392711633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9080778828 + ... + 9080778869.

It is an arithmetic number, because the mean of its divisors is an integer number (72646230792).

Almost surely, 2^381392711637 is an apocalyptic number.

It is an amenable number.

381392711637 is a deficient number, since it is larger than the sum of its proper divisors (199777134699).

381392711637 is a wasteful number, since it uses less digits than its factorization.

381392711637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18161557707.

The product of its digits is 1143072, while the sum is 51.

The spelling of 381392711637 in words is "three hundred eighty-one billion, three hundred ninety-two million, seven hundred eleven thousand, six hundred thirty-seven".