378639495 has 64 divisors (see below), whose sum is σ = 734361600. Its totient is φ = 183980160.

The previous prime is 378639493. The next prime is 378639497. The reversal of 378639495 is 594936873.

It is an interprime number because it is at equal distance from previous prime (378639493) and next prime (378639497).

It is not a de Polignac number, because 378639495 - 2¹ = 378639493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378639493) 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 63 ways as a sum of consecutive naturals, for example, 137280 + ... + 140010.

It is an arithmetic number, because the mean of its divisors is an integer number (11474400).

Almost surely, 2^378639495 is an apocalyptic number.

378639495 is a deficient number, since it is larger than the sum of its proper divisors (355722105).

378639495 is a wasteful number, since it uses less digits than its factorization.

378639495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2831 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 378639495 is about 19458.6611821060. The cubic root of 378639495 is about 723.4501939549.

The spelling of 378639495 in words is "three hundred seventy-eight million, six hundred thirty-nine thousand, four hundred ninety-five".