381938793819 has 16 divisors (see below), whose sum is σ = 555655019904. Its totient is φ = 231433188800.

The previous prime is 381938793727. The next prime is 381938793823. The reversal of 381938793819 is 918397839183.

It is not a de Polignac number, because 381938793819 - 2¹¹ = 381938791771 is a prime.

It is a super-2 number, since 2×381938793819² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381938793829) 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, 948474 + ... + 1289759.

It is an arithmetic number, because the mean of its divisors is an integer number (34728438744).

Almost surely, 2^381938793819 is an apocalyptic number.

381938793819 is a deficient number, since it is larger than the sum of its proper divisors (173716226085).

381938793819 is a wasteful number, since it uses less digits than its factorization.

381938793819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243418.

The product of its digits is 70543872, while the sum is 69.

The spelling of 381938793819 in words is "three hundred eighty-one billion, nine hundred thirty-eight million, seven hundred ninety-three thousand, eight hundred nineteen".