381457131868 has 48 divisors (see below), whose sum is σ = 676405997568. Its totient is φ = 188213600000.

The previous prime is 381457131859. The next prime is 381457131877. The reversal of 381457131868 is 868131754183.

It is an interprime number because it is at equal distance from previous prime (381457131859) and next prime (381457131877).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197542863 + ... + 197544793.

It is an arithmetic number, because the mean of its divisors is an integer number (14091791616).

Almost surely, 2^381457131868 is an apocalyptic number.

It is an amenable number.

381457131868 is a deficient number, since it is larger than the sum of its proper divisors (294948865700).

381457131868 is a wasteful number, since it uses less digits than its factorization.

381457131868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3592 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The spelling of 381457131868 in words is "three hundred eighty-one billion, four hundred fifty-seven million, one hundred thirty-one thousand, eight hundred sixty-eight".