380555638 has 16 divisors (see below), whose sum is σ = 579262320. Its totient is φ = 187485696.

The previous prime is 380555621. The next prime is 380555639. The reversal of 380555638 is 836555083.

It is a super-2 number, since 2×380555638² = 289645187227174088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 380555594 and 380555603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380555639) 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 7 ways as a sum of consecutive naturals, for example, 40993 + ... + 49411.

It is an arithmetic number, because the mean of its divisors is an integer number (36203895).

Almost surely, 2^380555638 is an apocalyptic number.

380555638 is a deficient number, since it is larger than the sum of its proper divisors (198706682).

380555638 is a wasteful number, since it uses less digits than its factorization.

380555638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8751.

The product of its (nonzero) digits is 432000, while the sum is 43.

The square root of 380555638 is about 19507.8352976439. The cubic root of 380555638 is about 724.6685051308.

The spelling of 380555638 in words is "three hundred eighty million, five hundred fifty-five thousand, six hundred thirty-eight".