156648949 has 2 divisors, whose sum is σ = 156648950. Its totient is φ = 156648948.

The previous prime is 156648941. The next prime is 156648959. The reversal of 156648949 is 949846651.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153586449 + 3062500 = 12393^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 156648949 - 2³ = 156648941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156648896 and 156648905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156648941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78324474 + 78324475.

It is an arithmetic number, because the mean of its divisors is an integer number (78324475).

Almost surely, 2^156648949 is an apocalyptic number.

It is an amenable number.

156648949 is a deficient number, since it is larger than the sum of its proper divisors (1).

156648949 is an equidigital number, since it uses as much as digits as its factorization.

156648949 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 156648949 is about 12515.9477867239. The cubic root of 156648949 is about 539.0666880173.

The spelling of 156648949 in words is "one hundred fifty-six million, six hundred forty-eight thousand, nine hundred forty-nine".