2151432539 has 2 divisors, whose sum is σ = 2151432540. Its totient is φ = 2151432538.

The previous prime is 2151432533. The next prime is 2151432559. The reversal of 2151432539 is 9352341512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2151432539 - 2⁴ = 2151432523 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2151432499 and 2151432508.

It is not a weakly prime, because it can be changed into another prime (2151432533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075716269 + 1075716270.

It is an arithmetic number, because the mean of its divisors is an integer number (1075716270).

Almost surely, 2^2151432539 is an apocalyptic number.

2151432539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151432539 is an equidigital number, since it uses as much as digits as its factorization.

2151432539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 2151432539 is about 46383.5373704939. The cubic root of 2151432539 is about 1290.9494720570.

The spelling of 2151432539 in words is "two billion, one hundred fifty-one million, four hundred thirty-two thousand, five hundred thirty-nine".