3649515139 has 4 divisors (see below), whose sum is σ = 3650866024. Its totient is φ = 3648164256.

The previous prime is 3649515109. The next prime is 3649515157. The reversal of 3649515139 is 9315159463.

3649515139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3649515139 - 2⁷ = 3649515011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649515109) 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, 671382 + ... + 676795.

It is an arithmetic number, because the mean of its divisors is an integer number (912716506).

Almost surely, 2^3649515139 is an apocalyptic number.

3649515139 is a deficient number, since it is larger than the sum of its proper divisors (1350885).

3649515139 is a wasteful number, since it uses less digits than its factorization.

3649515139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350884.

The product of its digits is 437400, while the sum is 46.

The square root of 3649515139 is about 60411.2169965148. The cubic root of 3649515139 is about 1539.6135448743.

The spelling of 3649515139 in words is "three billion, six hundred forty-nine million, five hundred fifteen thousand, one hundred thirty-nine".