378557139 has 16 divisors (see below), whose sum is σ = 540444960. Its totient is φ = 234854400.

The previous prime is 378557099. The next prime is 378557143. The reversal of 378557139 is 931755873.

It is not a de Polignac number, because 378557139 - 2⁸ = 378556883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378557189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37162 + ... + 46239.

It is an arithmetic number, because the mean of its divisors is an integer number (33777810).

Almost surely, 2^378557139 is an apocalyptic number.

378557139 is a deficient number, since it is larger than the sum of its proper divisors (161887821).

378557139 is a wasteful number, since it uses less digits than its factorization.

378557139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83510.

The product of its digits is 793800, while the sum is 48.

The square root of 378557139 is about 19456.5448885459. The cubic root of 378557139 is about 723.3977387962.

The spelling of 378557139 in words is "three hundred seventy-eight million, five hundred fifty-seven thousand, one hundred thirty-nine".