2152131449 has 16 divisors (see below), whose sum is σ = 2335517184. Its totient is φ = 1971345600.

The previous prime is 2152131433. The next prime is 2152131491. The reversal of 2152131449 is 9441312512.

It is a cyclic number.

It is not a de Polignac number, because 2152131449 - 2⁴ = 2152131433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2152131419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1747664 + ... + 1748894.

It is an arithmetic number, because the mean of its divisors is an integer number (145969824).

Almost surely, 2^2152131449 is an apocalyptic number.

It is an amenable number.

2152131449 is a deficient number, since it is larger than the sum of its proper divisors (183385735).

2152131449 is a wasteful number, since it uses less digits than its factorization.

2152131449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its digits is 8640, while the sum is 32.

The square root of 2152131449 is about 46391.0707895388. The cubic root of 2152131449 is about 1291.0892486624.

The spelling of 2152131449 in words is "two billion, one hundred fifty-two million, one hundred thirty-one thousand, four hundred forty-nine".