156345643 has 2 divisors, whose sum is σ = 156345644. Its totient is φ = 156345642.

The previous prime is 156345619. The next prime is 156345649. The reversal of 156345643 is 346543651.

It is a strong prime.

It is an emirp because it is prime and its reverse (346543651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156345643 - 2⁵ = 156345611 is a prime.

It is not a weakly prime, because it can be changed into another prime (156345649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78172821 + 78172822.

It is an arithmetic number, because the mean of its divisors is an integer number (78172822).

Almost surely, 2^156345643 is an apocalyptic number.

156345643 is a deficient number, since it is larger than the sum of its proper divisors (1).

156345643 is an equidigital number, since it uses as much as digits as its factorization.

156345643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 37.

The square root of 156345643 is about 12503.8251347338. The cubic root of 156345643 is about 538.7185469442.

The spelling of 156345643 in words is "one hundred fifty-six million, three hundred forty-five thousand, six hundred forty-three".