3701870649 has 27 divisors (see below), whose sum is σ = 5684952013. Its totient is φ = 2320795392.

The previous prime is 3701870639. The next prime is 3701870651. The reversal of 3701870649 is 9460781073.

The square root of 3701870649 is 60843.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 342509049 + 3359361600 = 18507^2 + 57960^2 .

It is not a de Polignac number, because 3701870649 - 2⁵ = 3701870617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3701870639) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3102397 + ... + 3103589.

Almost surely, 2^3701870649 is an apocalyptic number.

3701870649 is the 60843-rd square number.

3701870649 is the 30422-nd centered octagonal number.

It is an amenable number.

3701870649 is a deficient number, since it is larger than the sum of its proper divisors (1983081364).

3701870649 is an equidigital number, since it uses as much as digits as its factorization.

3701870649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The cubic root of 3701870649 is about 1546.9409871624.

Multiplying 3701870649 by its product of nonzero digits (254016), we get a square (940334374776384 = 30664872²).

The spelling of 3701870649 in words is "three billion, seven hundred one million, eight hundred seventy thousand, six hundred forty-nine".