156849073 has 2 divisors, whose sum is σ = 156849074. Its totient is φ = 156849072.

The previous prime is 156848999. The next prime is 156849103. The reversal of 156849073 is 370948651.

156849073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102576384 + 54272689 = 10128^2 + 7367^2 .

It is an emirp because it is prime and its reverse (370948651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156849073 - 2²¹ = 154751921 is a prime.

It is not a weakly prime, because it can be changed into another prime (156843073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78424536 + 78424537.

It is an arithmetic number, because the mean of its divisors is an integer number (78424537).

Almost surely, 2^156849073 is an apocalyptic number.

It is an amenable number.

156849073 is a deficient number, since it is larger than the sum of its proper divisors (1).

156849073 is an equidigital number, since it uses as much as digits as its factorization.

156849073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 156849073 is about 12523.9399950655. The cubic root of 156849073 is about 539.2961485936.

The spelling of 156849073 in words is "one hundred fifty-six million, eight hundred forty-nine thousand, seventy-three".