3215032649 has 4 divisors (see below), whose sum is σ = 3220683540. Its totient is φ = 3209381760.

The previous prime is 3215032637. The next prime is 3215032679. The reversal of 3215032649 is 9462305123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 994267024 + 2220765625 = 31532^2 + 47125^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215032649 - 2⁸ = 3215032393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3215032679) 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, 2824592 + ... + 2825729.

It is an arithmetic number, because the mean of its divisors is an integer number (805170885).

Almost surely, 2^3215032649 is an apocalyptic number.

It is an amenable number.

3215032649 is a deficient number, since it is larger than the sum of its proper divisors (5650891).

3215032649 is an equidigital number, since it uses as much as digits as its factorization.

3215032649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650890.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 3215032649 is about 56701.2579137359. The cubic root of 3215032649 is about 1475.9165268425.

The spelling of 3215032649 in words is "three billion, two hundred fifteen million, thirty-two thousand, six hundred forty-nine".