156496489 has 2 divisors, whose sum is σ = 156496490. Its totient is φ = 156496488.

The previous prime is 156496411. The next prime is 156496493. The reversal of 156496489 is 984694651.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145998889 + 10497600 = 12083^2 + 3240^2 .

It is an emirp because it is prime and its reverse (984694651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156496489 - 2¹¹ = 156494441 is a prime.

It is not a weakly prime, because it can be changed into another prime (156496409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78248244 + 78248245.

It is an arithmetic number, because the mean of its divisors is an integer number (78248245).

Almost surely, 2^156496489 is an apocalyptic number.

It is an amenable number.

156496489 is a deficient number, since it is larger than the sum of its proper divisors (1).

156496489 is an equidigital number, since it uses as much as digits as its factorization.

156496489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 52.

The square root of 156496489 is about 12509.8556746271. The cubic root of 156496489 is about 538.8917474150.

The spelling of 156496489 in words is "one hundred fifty-six million, four hundred ninety-six thousand, four hundred eighty-nine".