381638976515 has 8 divisors (see below), whose sum is σ = 457983170160. Its totient is φ = 305300248992.

The previous prime is 381638976493. The next prime is 381638976533. The reversal of 381638976515 is 515679836183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381638976515 - 2⁶ = 381638976451 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211324 + ... + 1493513.

It is an arithmetic number, because the mean of its divisors is an integer number (57247896270).

Almost surely, 2^381638976515 is an apocalyptic number.

381638976515 is a deficient number, since it is larger than the sum of its proper divisors (76344193645).

381638976515 is a wasteful number, since it uses less digits than its factorization.

381638976515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733061.

The product of its digits is 32659200, while the sum is 62.

The spelling of 381638976515 in words is "three hundred eighty-one billion, six hundred thirty-eight million, nine hundred seventy-six thousand, five hundred fifteen".