156994463 has 2 divisors, whose sum is σ = 156994464. Its totient is φ = 156994462.

The previous prime is 156994451. The next prime is 156994469. The reversal of 156994463 is 364499651.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (364499651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156994463 - 2⁶ = 156994399 is a prime.

It is a super-2 number, since 2×156994463² = 49294522825316738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156994469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78497231 + 78497232.

It is an arithmetic number, because the mean of its divisors is an integer number (78497232).

Almost surely, 2^156994463 is an apocalyptic number.

156994463 is a deficient number, since it is larger than the sum of its proper divisors (1).

156994463 is an equidigital number, since it uses as much as digits as its factorization.

156994463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 47.

The square root of 156994463 is about 12529.7431338396. The cubic root of 156994463 is about 539.4627292251.

The spelling of 156994463 in words is "one hundred fifty-six million, nine hundred ninety-four thousand, four hundred sixty-three".