378415923 has 16 divisors (see below), whose sum is σ = 510471936. Its totient is φ = 249328800.

The previous prime is 378415889. The next prime is 378415943. The reversal of 378415923 is 329514873.

It is not a de Polignac number, because 378415923 - 2¹⁰ = 378414899 is a prime.

It is a super-2 number, since 2×378415923² = 286397221559883858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378415943) 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, 215736 + ... + 217482.

It is an arithmetic number, because the mean of its divisors is an integer number (31904496).

Almost surely, 2^378415923 is an apocalyptic number.

378415923 is a deficient number, since it is larger than the sum of its proper divisors (132056013).

378415923 is a wasteful number, since it uses less digits than its factorization.

378415923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554.

The product of its digits is 181440, while the sum is 42.

The square root of 378415923 is about 19452.9155398362. The cubic root of 378415923 is about 723.3077761197.

The spelling of 378415923 in words is "three hundred seventy-eight million, four hundred fifteen thousand, nine hundred twenty-three".