380915690 has 8 divisors (see below), whose sum is σ = 685648260. Its totient is φ = 152366272.

The previous prime is 380915687. The next prime is 380915699. The reversal of 380915690 is 96519083.

It can be written as a sum of positive squares in 2 ways, for example, as 380913289 + 2401 = 19517^2 + 49^2 .

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

It is a super-2 number, since 2×380915690² = 290193525776352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380915699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19045775 + ... + 19045794.

Almost surely, 2^380915690 is an apocalyptic number.

380915690 is a deficient number, since it is larger than the sum of its proper divisors (304732570).

380915690 is a wasteful number, since it uses less digits than its factorization.

380915690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38091576.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 380915690 is about 19517.0615103811. The cubic root of 380915690 is about 724.8969746588.

The spelling of 380915690 in words is "three hundred eighty million, nine hundred fifteen thousand, six hundred ninety".