7504394137 has 2 divisors, whose sum is σ = 7504394138. Its totient is φ = 7504394136.

The previous prime is 7504394129. The next prime is 7504394143. The reversal of 7504394137 is 7314934057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7497654921 + 6739216 = 86589^2 + 2596^2 .

It is a cyclic number.

It is not a de Polignac number, because 7504394137 - 2³ = 7504394129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7504394093 and 7504394102.

It is not a weakly prime, because it can be changed into another prime (7504394197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3752197068 + 3752197069.

It is an arithmetic number, because the mean of its divisors is an integer number (3752197069).

Almost surely, 2^7504394137 is an apocalyptic number.

It is an amenable number.

7504394137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7504394137 is an equidigital number, since it uses as much as digits as its factorization.

7504394137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 7504394137 is about 86627.9062254191. The cubic root of 7504394137 is about 1957.8160229464.

The spelling of 7504394137 in words is "seven billion, five hundred four million, three hundred ninety-four thousand, one hundred thirty-seven".