387186668494 has 32 divisors (see below), whose sum is σ = 646364183616. Its totient is φ = 173011322880.

The previous prime is 387186668447. The next prime is 387186668497. The reversal of 387186668494 is 494866681783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387186668497) 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, 1699887 + ... + 1914154.

It is an arithmetic number, because the mean of its divisors is an integer number (20198880738).

Almost surely, 2^387186668494 is an apocalyptic number.

387186668494 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

387186668494 is a deficient number, since it is larger than the sum of its proper divisors (259177515122).

387186668494 is a wasteful number, since it uses less digits than its factorization.

387186668494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614220.

The product of its digits is 334430208, while the sum is 70.

The spelling of 387186668494 in words is "three hundred eighty-seven billion, one hundred eighty-six million, six hundred sixty-eight thousand, four hundred ninety-four".