651118973 has 2 divisors, whose sum is σ = 651118974. Its totient is φ = 651118972.

The previous prime is 651118907. The next prime is 651119011. The reversal of 651118973 is 379811156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389391289 + 261727684 = 19733^2 + 16178^2 .

It is a cyclic number.

It is not a de Polignac number, because 651118973 - 2²⁰ = 650070397 is a prime.

It is equal to p_33848672 and since 651118973 and 33848672 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 651118973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651118073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325559486 + 325559487.

It is an arithmetic number, because the mean of its divisors is an integer number (325559487).

Almost surely, 2^651118973 is an apocalyptic number.

It is an amenable number.

651118973 is a deficient number, since it is larger than the sum of its proper divisors (1).

651118973 is an equidigital number, since it uses as much as digits as its factorization.

651118973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 41.

The square root of 651118973 is about 25517.0329975881. The cubic root of 651118973 is about 866.7358963600.

The spelling of 651118973 in words is "six hundred fifty-one million, one hundred eighteen thousand, nine hundred seventy-three".