7394161081 has 2 divisors, whose sum is σ = 7394161082. Its totient is φ = 7394161080.

The previous prime is 7394161009. The next prime is 7394161097. The reversal of 7394161081 is 1801614937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6975590400 + 418570681 = 83520^2 + 20459^2 .

It is a cyclic number.

It is not a de Polignac number, because 7394161081 - 2⁷ = 7394160953 is a prime.

It is a super-2 number, since 2×7394161081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7394164081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3697080540 + 3697080541.

It is an arithmetic number, because the mean of its divisors is an integer number (3697080541).

Almost surely, 2^7394161081 is an apocalyptic number.

It is an amenable number.

7394161081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7394161081 is an equidigital number, since it uses as much as digits as its factorization.

7394161081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 7394161081 is about 85989.3079458138. The cubic root of 7394161081 is about 1948.1824906828.

The spelling of 7394161081 in words is "seven billion, three hundred ninety-four million, one hundred sixty-one thousand, eighty-one".