3694686481 has 4 divisors (see below), whose sum is σ = 3698067892. Its totient is φ = 3691305072.

The previous prime is 3694686433. The next prime is 3694686503. The reversal of 3694686481 is 1846864963.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2641034881 + 1053651600 = 51391^2 + 32460^2 .

It is a cyclic number.

It is not a de Polignac number, because 3694686481 - 2¹⁵ = 3694653713 is a prime.

It is a super-2 number, since 2×3694686481² = 27301416385768326722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3695686481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689066 + ... + 1691251.

It is an arithmetic number, because the mean of its divisors is an integer number (924516973).

Almost surely, 2^3694686481 is an apocalyptic number.

It is an amenable number.

3694686481 is a deficient number, since it is larger than the sum of its proper divisors (3381411).

3694686481 is a wasteful number, since it uses less digits than its factorization.

3694686481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381410.

The product of its digits is 5971968, while the sum is 55.

The square root of 3694686481 is about 60783.9327536480. The cubic root of 3694686481 is about 1545.9396302797.

The spelling of 3694686481 in words is "three billion, six hundred ninety-four million, six hundred eighty-six thousand, four hundred eighty-one".