378157109 has 8 divisors (see below), whose sum is σ = 412753728. Its totient is φ = 343596960.

The previous prime is 378157103. The next prime is 378157123. The reversal of 378157109 is 901751873.

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-378157109 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 (378157103) 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 7 ways as a sum of consecutive naturals, for example, 15464 + ... + 31550.

It is an arithmetic number, because the mean of its divisors is an integer number (51594216).

Almost surely, 2^378157109 is an apocalyptic number.

It is an amenable number.

378157109 is a deficient number, since it is larger than the sum of its proper divisors (34596619).

378157109 is a wasteful number, since it uses less digits than its factorization.

378157109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 378157109 is about 19446.2620829814. The cubic root of 378157109 is about 723.1428386686.

The spelling of 378157109 in words is "three hundred seventy-eight million, one hundred fifty-seven thousand, one hundred nine".