378138157 has 8 divisors (see below), whose sum is σ = 400631616. Its totient is φ = 355672512.

The previous prime is 378138143. The next prime is 378138179. The reversal of 378138157 is 751831873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378138157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378138197) 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, 25378 + ... + 37420.

It is an arithmetic number, because the mean of its divisors is an integer number (50078952).

Almost surely, 2^378138157 is an apocalyptic number.

It is an amenable number.

378138157 is a deficient number, since it is larger than the sum of its proper divisors (22493459).

378138157 is a wasteful number, since it uses less digits than its factorization.

378138157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13907.

The product of its digits is 141120, while the sum is 43.

The square root of 378138157 is about 19445.7747852843. The cubic root of 378138157 is about 723.1307579472.

The spelling of 378138157 in words is "three hundred seventy-eight million, one hundred thirty-eight thousand, one hundred fifty-seven".