7634899957 has 2 divisors, whose sum is σ = 7634899958. Its totient is φ = 7634899956.

The previous prime is 7634899927. The next prime is 7634899991. The reversal of 7634899957 is 7599984367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6537369316 + 1097530641 = 80854^2 + 33129^2 .

It is an emirp because it is prime and its reverse (7599984367) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7634899957 - 2¹⁹ = 7634375669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7634899892 and 7634899901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7634899907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3817449978 + 3817449979.

It is an arithmetic number, because the mean of its divisors is an integer number (3817449979).

Almost surely, 2^7634899957 is an apocalyptic number.

It is an amenable number.

7634899957 is a deficient number, since it is larger than the sum of its proper divisors (1).

7634899957 is an equidigital number, since it uses as much as digits as its factorization.

7634899957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102876480, while the sum is 67.

The square root of 7634899957 is about 87377.9145837208. The cubic root of 7634899957 is about 1969.1000516356.

The spelling of 7634899957 in words is "seven billion, six hundred thirty-four million, eight hundred ninety-nine thousand, nine hundred fifty-seven".