1423183920 has 40 divisors (see below), whose sum is σ = 4411870896. Its totient is φ = 379515648.

The previous prime is 1423183913. The next prime is 1423183921. The reversal of 1423183920 is 293813241.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1423183921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2964727 + ... + 2965206.

Almost surely, 2^1423183920 is an apocalyptic number.

1423183920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423183920 is an abundant number, since it is smaller than the sum of its proper divisors (2988686976).

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

1423183920 is a wasteful number, since it uses less digits than its factorization.

1423183920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929949 (or 5929943 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1423183920 is about 37725.1099401977. The cubic root of 1423183920 is about 1124.8303072447.

The spelling of 1423183920 in words is "one billion, four hundred twenty-three million, one hundred eighty-three thousand, nine hundred twenty".