156934949 has 2 divisors, whose sum is σ = 156934950. Its totient is φ = 156934948.

The previous prime is 156934937. The next prime is 156934951. The reversal of 156934949 is 949439651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125776225 + 31158724 = 11215^2 + 5582^2 .

It is a cyclic number.

It is not a de Polignac number, because 156934949 - 2¹² = 156930853 is a prime.

Together with 156934951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 156934897 and 156934906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156934909) 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, 78467474 + 78467475.

It is an arithmetic number, because the mean of its divisors is an integer number (78467475).

Almost surely, 2^156934949 is an apocalyptic number.

It is an amenable number.

156934949 is a deficient number, since it is larger than the sum of its proper divisors (1).

156934949 is an equidigital number, since it uses as much as digits as its factorization.

156934949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 50.

The square root of 156934949 is about 12527.3679997037. The cubic root of 156934949 is about 539.3945534818.

The spelling of 156934949 in words is "one hundred fifty-six million, nine hundred thirty-four thousand, nine hundred forty-nine".