7040188957 has 2 divisors, whose sum is σ = 7040188958. Its totient is φ = 7040188956.

The previous prime is 7040188951. The next prime is 7040189021. The reversal of 7040188957 is 7598810407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6131829636 + 908359321 = 78306^2 + 30139^2 .

It is a cyclic number.

It is not a de Polignac number, because 7040188957 - 2⁷ = 7040188829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7040188957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7040188951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3520094478 + 3520094479.

It is an arithmetic number, because the mean of its divisors is an integer number (3520094479).

Almost surely, 2^7040188957 is an apocalyptic number.

It is an amenable number.

7040188957 is a deficient number, since it is larger than the sum of its proper divisors (1).

7040188957 is an equidigital number, since it uses as much as digits as its factorization.

7040188957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 7040188957 is about 83905.8338674970. The cubic root of 7040188957 is about 1916.5850898748.

The spelling of 7040188957 in words is "seven billion, forty million, one hundred eighty-eight thousand, nine hundred fifty-seven".