3697078081 has 2 divisors, whose sum is σ = 3697078082. Its totient is φ = 3697078080.

The previous prime is 3697078061. The next prime is 3697078127. The reversal of 3697078081 is 1808707963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2112321600 + 1584756481 = 45960^2 + 39809^2 .

It is a cyclic number.

It is not a de Polignac number, because 3697078081 - 2¹⁹ = 3696553793 is a prime.

It is a super-2 number, since 2×3697078081² = 27336772674021285122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3697078051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1848539040 + 1848539041.

It is an arithmetic number, because the mean of its divisors is an integer number (1848539041).

Almost surely, 2^3697078081 is an apocalyptic number.

It is an amenable number.

3697078081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3697078081 is an equidigital number, since it uses as much as digits as its factorization.

3697078081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 3697078081 is about 60803.6025330736. The cubic root of 3697078081 is about 1546.2731246793.

The spelling of 3697078081 in words is "three billion, six hundred ninety-seven million, seventy-eight thousand, eighty-one".