378974517 has 16 divisors (see below), whose sum is σ = 514907520. Its totient is φ = 247867200.

The previous prime is 378974509. The next prime is 378974527. The reversal of 378974517 is 715479873.

It is not a de Polignac number, because 378974517 - 2³ = 378974509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378974517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378974507) 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, 74584 + ... + 79502.

It is an arithmetic number, because the mean of its divisors is an integer number (32181720).

Almost surely, 2^378974517 is an apocalyptic number.

It is an amenable number.

378974517 is a deficient number, since it is larger than the sum of its proper divisors (135933003).

378974517 is a wasteful number, since it uses less digits than its factorization.

378974517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404.

The product of its digits is 1481760, while the sum is 51.

The square root of 378974517 is about 19467.2678360370. The cubic root of 378974517 is about 723.6635017629.

The spelling of 378974517 in words is "three hundred seventy-eight million, nine hundred seventy-four thousand, five hundred seventeen".