3657104981 has 2 divisors, whose sum is σ = 3657104982. Its totient is φ = 3657104980.

The previous prime is 3657104959. The next prime is 3657105007. The reversal of 3657104981 is 1894017563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3651180625 + 5924356 = 60425^2 + 2434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3657104981 is a prime.

It is a super-2 number, since 2×3657104981² = 26748833684110020722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3657104881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828552490 + 1828552491.

It is an arithmetic number, because the mean of its divisors is an integer number (1828552491).

Almost surely, 2^3657104981 is an apocalyptic number.

It is an amenable number.

3657104981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3657104981 is an equidigital number, since it uses as much as digits as its factorization.

3657104981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 3657104981 is about 60474.0025217448. The cubic root of 3657104981 is about 1540.6801095897.

The spelling of 3657104981 in words is "three billion, six hundred fifty-seven million, one hundred four thousand, nine hundred eighty-one".