1973177139 has 16 divisors (see below), whose sum is σ = 2731773600. Its totient is φ = 1265354496.

The previous prime is 1973177123. The next prime is 1973177183. The reversal of 1973177139 is 9317713791.

It is not a de Polignac number, because 1973177139 - 2⁴ = 1973177123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1973177119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18754 + ... + 65559.

It is an arithmetic number, because the mean of its divisors is an integer number (170735850).

Almost surely, 2^1973177139 is an apocalyptic number.

1973177139 is a deficient number, since it is larger than the sum of its proper divisors (758596461).

1973177139 is a wasteful number, since it uses less digits than its factorization.

1973177139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84614.

The product of its digits is 250047, while the sum is 48.

The square root of 1973177139 is about 44420.4585635943. The cubic root of 1973177139 is about 1254.2632329987.

The spelling of 1973177139 in words is "one billion, nine hundred seventy-three million, one hundred seventy-seven thousand, one hundred thirty-nine".