7557738973 has 2 divisors, whose sum is σ = 7557738974. Its totient is φ = 7557738972.

The previous prime is 7557738967. The next prime is 7557739031. The reversal of 7557738973 is 3798377557.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5780104729 + 1777634244 = 76027^2 + 42162^2 .

It is a cyclic number.

It is not a de Polignac number, because 7557738973 - 2⁵ = 7557738941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7557738373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3778869486 + 3778869487.

It is an arithmetic number, because the mean of its divisors is an integer number (3778869487).

Almost surely, 2^7557738973 is an apocalyptic number.

It is an amenable number.

7557738973 is a deficient number, since it is larger than the sum of its proper divisors (1).

7557738973 is an equidigital number, since it uses as much as digits as its factorization.

7557738973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38896200, while the sum is 61.

The square root of 7557738973 is about 86935.2573643168. The cubic root of 7557738973 is about 1962.4441060419. Note that the first 3 decimals are identical.

The spelling of 7557738973 in words is "seven billion, five hundred fifty-seven million, seven hundred thirty-eight thousand, nine hundred seventy-three".