156849184426369 has 2 divisors, whose sum is σ = 156849184426370. Its totient is φ = 156849184426368.

The previous prime is 156849184426367. The next prime is 156849184426379. The reversal of 156849184426369 is 963624481948651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156821897351025 + 27287075344 = 12522855^2 + 165188^2 .

It is a cyclic number.

It is not a de Polignac number, because 156849184426369 - 2¹ = 156849184426367 is a prime.

It is a super-2 number, since 2×156849184426369² (a number of 29 digits) contains 22 as substring.

Together with 156849184426367, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 156849184426295 and 156849184426304.

It is not a weakly prime, because it can be changed into another prime (156849184426367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78424592213184 + 78424592213185.

It is an arithmetic number, because the mean of its divisors is an integer number (78424592213185).

Almost surely, 2^{156849184426369} is an apocalyptic number.

It is an amenable number.

156849184426369 is a deficient number, since it is larger than the sum of its proper divisors (1).

156849184426369 is an equidigital number, since it uses as much as digits as its factorization.

156849184426369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2149908480, while the sum is 76.

The spelling of 156849184426369 in words is "one hundred fifty-six trillion, eight hundred forty-nine billion, one hundred eighty-four million, four hundred twenty-six thousand, three hundred sixty-nine".