380649757885 has 16 divisors (see below), whose sum is σ = 463067919216. Its totient is φ = 300328224768.

The previous prime is 380649757883. The next prime is 380649757921. The reversal of 380649757885 is 588757946083.

It can be written as a sum of positive squares in 8 ways, for example, as 1601440324 + 379048317561 = 40018^2 + 615669^2 .

It is a cyclic number.

It is not a de Polignac number, because 380649757885 - 2¹ = 380649757883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380649757883) 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, 7910017 + ... + 7957993.

It is an arithmetic number, because the mean of its divisors is an integer number (28941744951).

Almost surely, 2^380649757885 is an apocalyptic number.

It is an amenable number.

380649757885 is a deficient number, since it is larger than the sum of its proper divisors (82418161331).

380649757885 is a wasteful number, since it uses less digits than its factorization.

380649757885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69792.

The product of its (nonzero) digits is 406425600, while the sum is 70.

The spelling of 380649757885 in words is "three hundred eighty billion, six hundred forty-nine million, seven hundred fifty-seven thousand, eight hundred eighty-five".