381137904479 has 2 divisors, whose sum is σ = 381137904480. Its totient is φ = 381137904478.

The previous prime is 381137904463. The next prime is 381137904541. The reversal of 381137904479 is 974409731183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381137904479 - 2⁴ = 381137904463 is a prime.

It is a super-2 number, since 2×381137904479² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381137904449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190568952239 + 190568952240.

It is an arithmetic number, because the mean of its divisors is an integer number (190568952240).

Almost surely, 2^381137904479 is an apocalyptic number.

381137904479 is a deficient number, since it is larger than the sum of its proper divisors (1).

381137904479 is an equidigital number, since it uses as much as digits as its factorization.

381137904479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 381137904479 in words is "three hundred eighty-one billion, one hundred thirty-seven million, nine hundred four thousand, four hundred seventy-nine".