2145252339 has 12 divisors (see below), whose sum is σ = 3110483376. Its totient is φ = 1424728752.

The previous prime is 2145252337. The next prime is 2145252367. The reversal of 2145252339 is 9332525412.

It is not a de Polignac number, because 2145252339 - 2¹ = 2145252337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145252337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450792 + ... + 455525.

It is an arithmetic number, because the mean of its divisors is an integer number (259206948).

Almost surely, 2^2145252339 is an apocalyptic number.

2145252339 is a deficient number, since it is larger than the sum of its proper divisors (965231037).

2145252339 is a wasteful number, since it uses less digits than its factorization.

2145252339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906586 (or 906583 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 2145252339 is about 46316.8688384696. The cubic root of 2145252339 is about 1289.7121604046.

The spelling of 2145252339 in words is "two billion, one hundred forty-five million, two hundred fifty-two thousand, three hundred thirty-nine".