384156923 has 2 divisors, whose sum is σ = 384156924. Its totient is φ = 384156922.

The previous prime is 384156907. The next prime is 384156943. The reversal of 384156923 is 329651483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 384156923 - 2⁴ = 384156907 is a prime.

It is not a weakly prime, because it can be changed into another prime (384156943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192078461 + 192078462.

It is an arithmetic number, because the mean of its divisors is an integer number (192078462).

Almost surely, 2^384156923 is an apocalyptic number.

384156923 is a deficient number, since it is larger than the sum of its proper divisors (1).

384156923 is an equidigital number, since it uses as much as digits as its factorization.

384156923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 384156923 is about 19599.9215049449. The cubic root of 384156923 is about 726.9472333764.

The spelling of 384156923 in words is "three hundred eighty-four million, one hundred fifty-six thousand, nine hundred twenty-three".