1993975123 has 4 divisors (see below), whose sum is σ = 2278828720. Its totient is φ = 1709121528.

The previous prime is 1993975111. The next prime is 1993975163. The reversal of 1993975123 is 3215793991.

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 1993975123 - 2⁵ = 1993975091 is a prime.

It is a super-2 number, since 2×1993975123² = 7951873582285730258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1993975163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142426788 + ... + 142426801.

It is an arithmetic number, because the mean of its divisors is an integer number (569707180).

Almost surely, 2^1993975123 is an apocalyptic number.

1993975123 is a deficient number, since it is larger than the sum of its proper divisors (284853597).

1993975123 is an equidigital number, since it uses as much as digits as its factorization.

1993975123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284853596.

The product of its digits is 459270, while the sum is 49.

The square root of 1993975123 is about 44653.9485712070. The cubic root of 1993975123 is about 1258.6546324815.

The spelling of 1993975123 in words is "one billion, nine hundred ninety-three million, nine hundred seventy-five thousand, one hundred twenty-three".