3708719681 has 4 divisors (see below), whose sum is σ = 3708929364. Its totient is φ = 3708510000.

The previous prime is 3708719671. The next prime is 3708719717. The reversal of 3708719681 is 1869178073.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1869178073 = 7 ⋅267025439.

It can be written as a sum of positive squares in 2 ways, for example, as 2219917456 + 1488802225 = 47116^2 + 38585^2 .

It is a cyclic number.

It is not a de Polignac number, because 3708719681 - 2³⁰ = 2634977857 is a prime.

It is a super-2 number, since 2×3708719681² = 27509203344473483522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3708719671) 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, 75590 + ... + 114591.

It is an arithmetic number, because the mean of its divisors is an integer number (927232341).

Almost surely, 2^3708719681 is an apocalyptic number.

It is an amenable number.

3708719681 is a deficient number, since it is larger than the sum of its proper divisors (209683).

3708719681 is a wasteful number, since it uses less digits than its factorization.

3708719681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209682.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 3708719681 is about 60899.2584601816. The cubic root of 3708719681 is about 1547.8944259214.

The spelling of 3708719681 in words is "three billion, seven hundred eight million, seven hundred nineteen thousand, six hundred eighty-one".