40518757 has 2 divisors, whose sum is σ = 40518758. Its totient is φ = 40518756.

The previous prime is 40518739. The next prime is 40518761. The reversal of 40518757 is 75781504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 3381921 = 6094^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 40518757 - 2¹⁹ = 39994469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40518707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20259378 + 20259379.

It is an arithmetic number, because the mean of its divisors is an integer number (20259379).

Almost surely, 2^40518757 is an apocalyptic number.

It is an amenable number.

40518757 is a deficient number, since it is larger than the sum of its proper divisors (1).

40518757 is an equidigital number, since it uses as much as digits as its factorization.

40518757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 40518757 is about 6365.4345491883. The cubic root of 40518757 is about 343.4672803985.

The spelling of 40518757 in words is "forty million, five hundred eighteen thousand, seven hundred fifty-seven".