381738264986 has 16 divisors (see below), whose sum is σ = 652927892904. Its totient is φ = 165822956544.

The previous prime is 381738264983. The next prime is 381738265067. The reversal of 381738264986 is 689462837183.

It can be written as a sum of positive squares in 4 ways, for example, as 212492418961 + 169245846025 = 460969^2 + 411395^2 .

It is not an unprimeable number, because it can be changed into a prime (381738264983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431830175 + ... + 431831058.

Almost surely, 2^381738264986 is an apocalyptic number.

381738264986 is a deficient number, since it is larger than the sum of its proper divisors (271189627918).

381738264986 is a wasteful number, since it uses less digits than its factorization.

381738264986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863661265.

The product of its digits is 83607552, while the sum is 65.

The spelling of 381738264986 in words is "three hundred eighty-one billion, seven hundred thirty-eight million, two hundred sixty-four thousand, nine hundred eighty-six".