380868557 has 8 divisors (see below), whose sum is σ = 391842360. Its totient is φ = 369975040.

The previous prime is 380868529. The next prime is 380868581. The reversal of 380868557 is 755868083.

It can be written as a sum of positive squares in 4 ways, for example, as 72361 + 380796196 = 269^2 + 19514^2 .

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 380868557 - 2¹² = 380864461 is a prime.

It is a super-2 number, since 2×380868557² = 290121715422524498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380868517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10382 + ... + 29487.

It is an arithmetic number, because the mean of its divisors is an integer number (48980295).

Almost surely, 2^380868557 is an apocalyptic number.

It is an amenable number.

380868557 is a deficient number, since it is larger than the sum of its proper divisors (10973803).

380868557 is a wasteful number, since it uses less digits than its factorization.

380868557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40143.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The square root of 380868557 is about 19515.8539910505. The cubic root of 380868557 is about 724.8670747980.

The spelling of 380868557 in words is "three hundred eighty million, eight hundred sixty-eight thousand, five hundred fifty-seven".