2151432839 has 4 divisors (see below), whose sum is σ = 2159613456. Its totient is φ = 2143252224.

The previous prime is 2151432809. The next prime is 2151432883. The reversal of 2151432839 is 9382341512.

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

It is a de Polignac number, because none of the positive numbers 2^k-2151432839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151432809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4089914 + ... + 4090439.

It is an arithmetic number, because the mean of its divisors is an integer number (539903364).

Almost surely, 2^2151432839 is an apocalyptic number.

2151432839 is a deficient number, since it is larger than the sum of its proper divisors (8180617).

2151432839 is an equidigital number, since it uses as much as digits as its factorization.

2151432839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180616.

The product of its digits is 51840, while the sum is 38.

The square root of 2151432839 is about 46383.5406043997. The cubic root of 2151432839 is about 1290.9495320611.

The spelling of 2151432839 in words is "two billion, one hundred fifty-one million, four hundred thirty-two thousand, eight hundred thirty-nine".