378911730 has 16 divisors (see below), whose sum is σ = 909388224. Its totient is φ = 101043120.

The previous prime is 378911711. The next prime is 378911749. The reversal of 378911730 is 37119873.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (378911711) and next prime (378911749).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6315166 + ... + 6315225.

It is an arithmetic number, because the mean of its divisors is an integer number (56836764).

Almost surely, 2^378911730 is an apocalyptic number.

378911730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378911730 is an abundant number, since it is smaller than the sum of its proper divisors (530476494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378911730 is a wasteful number, since it uses less digits than its factorization.

378911730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630401.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 378911730 is about 19465.6551392446. The cubic root of 378911730 is about 723.6235349861.

It can be divided in two parts, 37891 and 1730, that added together give a triangular number (39621 = T₂₈₁).

The spelling of 378911730 in words is "three hundred seventy-eight million, nine hundred eleven thousand, seven hundred thirty".