1974423923 has 4 divisors (see below), whose sum is σ = 1974753648. Its totient is φ = 1974094200.

The previous prime is 1974423901. The next prime is 1974423947. The reversal of 1974423923 is 3293244791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1974423923 - 2²² = 1970229619 is a prime.

It is a super-4 number, since 4×1974423923⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1974423953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155711 + ... + 167912.

It is an arithmetic number, because the mean of its divisors is an integer number (493688412).

Almost surely, 2^1974423923 is an apocalyptic number.

1974423923 is a deficient number, since it is larger than the sum of its proper divisors (329725).

1974423923 is an equidigital number, since it uses as much as digits as its factorization.

1974423923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329724.

The product of its digits is 326592, while the sum is 44.

The square root of 1974423923 is about 44434.4902412529. The cubic root of 1974423923 is about 1254.5273529039.

The spelling of 1974423923 in words is "one billion, nine hundred seventy-four million, four hundred twenty-three thousand, nine hundred twenty-three".