2351791973 has 2 divisors, whose sum is σ = 2351791974. Its totient is φ = 2351791972.

The previous prime is 2351791963. The next prime is 2351791999. The reversal of 2351791973 is 3791971532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2217185569 + 134606404 = 47087^2 + 11602^2 .

It is a cyclic number.

It is not a de Polignac number, because 2351791973 - 2⁶ = 2351791909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2351791933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1175895986 + 1175895987.

It is an arithmetic number, because the mean of its divisors is an integer number (1175895987).

Almost surely, 2^2351791973 is an apocalyptic number.

It is an amenable number.

2351791973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2351791973 is an equidigital number, since it uses as much as digits as its factorization.

2351791973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357210, while the sum is 47.

The square root of 2351791973 is about 48495.2778422807. The cubic root of 2351791973 is about 1329.8407431750.

The spelling of 2351791973 in words is "two billion, three hundred fifty-one million, seven hundred ninety-one thousand, nine hundred seventy-three".