3699706981 has 2 divisors, whose sum is σ = 3699706982. Its totient is φ = 3699706980.

The previous prime is 3699706963. The next prime is 3699706993. The reversal of 3699706981 is 1896079963.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3310276225 + 389430756 = 57535^2 + 19734^2 .

It is an emirp because it is prime and its reverse (1896079963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3699706981 - 2⁷ = 3699706853 is a prime.

It is a super-2 number, since 2×3699706981² = 27375663490520268722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3699706931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1849853490 + 1849853491.

It is an arithmetic number, because the mean of its divisors is an integer number (1849853491).

Almost surely, 2^3699706981 is an apocalyptic number.

It is an amenable number.

3699706981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3699706981 is an equidigital number, since it uses as much as digits as its factorization.

3699706981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 3699706981 is about 60825.2166539504. The cubic root of 3699706981 is about 1546.6395432585.

The spelling of 3699706981 in words is "three billion, six hundred ninety-nine million, seven hundred six thousand, nine hundred eighty-one".