7725731983 has 2 divisors, whose sum is σ = 7725731984. Its totient is φ = 7725731982.

The previous prime is 7725731971. The next prime is 7725731999. The reversal of 7725731983 is 3891375277.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7725731983 is a prime.

It is a super-2 number, since 2×7725731983² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7725731983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7725731963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3862865991 + 3862865992.

It is an arithmetic number, because the mean of its divisors is an integer number (3862865992).

Almost surely, 2^7725731983 is an apocalyptic number.

7725731983 is a deficient number, since it is larger than the sum of its proper divisors (1).

7725731983 is an equidigital number, since it uses as much as digits as its factorization.

7725731983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2222640, while the sum is 52.

The square root of 7725731983 is about 87896.1431633948. The cubic root of 7725731983 is about 1976.8780497554.

The spelling of 7725731983 in words is "seven billion, seven hundred twenty-five million, seven hundred thirty-one thousand, nine hundred eighty-three".