378865401 has 16 divisors (see below), whose sum is σ = 513967296. Its totient is φ = 248196096.

The previous prime is 378865397. The next prime is 378865411. The reversal of 378865401 is 104568873.

It is not a de Polignac number, because 378865401 - 2² = 378865397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378865411) 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, 58921 + ... + 65033.

It is an arithmetic number, because the mean of its divisors is an integer number (32122956).

Almost surely, 2^378865401 is an apocalyptic number.

It is an amenable number.

378865401 is a deficient number, since it is larger than the sum of its proper divisors (135101895).

378865401 is a wasteful number, since it uses less digits than its factorization.

378865401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 378865401 is about 19464.4650838393. The cubic root of 378865401 is about 723.5940416429.

The spelling of 378865401 in words is "three hundred seventy-eight million, eight hundred sixty-five thousand, four hundred one".