156146449 has 2 divisors, whose sum is σ = 156146450. Its totient is φ = 156146448.

The previous prime is 156146447. The next prime is 156146477. The reversal of 156146449 is 944641651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153586449 + 2560000 = 12393^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 156146449 - 2¹ = 156146447 is a prime.

Together with 156146447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (156146447) 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, 78073224 + 78073225.

It is an arithmetic number, because the mean of its divisors is an integer number (78073225).

Almost surely, 2^156146449 is an apocalyptic number.

It is an amenable number.

156146449 is a deficient number, since it is larger than the sum of its proper divisors (1).

156146449 is an equidigital number, since it uses as much as digits as its factorization.

156146449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 156146449 is about 12495.8572735127. The cubic root of 156146449 is about 538.4896628183.

The spelling of 156146449 in words is "one hundred fifty-six million, one hundred forty-six thousand, four hundred forty-nine".