7745424131 has 2 divisors, whose sum is σ = 7745424132. Its totient is φ = 7745424130.

The previous prime is 7745424091. The next prime is 7745424199. The reversal of 7745424131 is 1314245477.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7745424131 - 2¹⁰ = 7745423107 is a prime.

It is a super-2 number, since 2×7745424131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7745424031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3872712065 + 3872712066.

It is an arithmetic number, because the mean of its divisors is an integer number (3872712066).

Almost surely, 2^7745424131 is an apocalyptic number.

7745424131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7745424131 is an equidigital number, since it uses as much as digits as its factorization.

7745424131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 7745424131 is about 88008.0912814271. The cubic root of 7745424131 is about 1978.5562487304.

The spelling of 7745424131 in words is "seven billion, seven hundred forty-five million, four hundred twenty-four thousand, one hundred thirty-one".