156949438 has 4 divisors (see below), whose sum is σ = 235424160. Its totient is φ = 78474718.

The previous prime is 156949411. The next prime is 156949451. The reversal of 156949438 is 834949651.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 156949391 and 156949400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39237358 + ... + 39237361.

It is an arithmetic number, because the mean of its divisors is an integer number (58856040).

Almost surely, 2^156949438 is an apocalyptic number.

156949438 is a deficient number, since it is larger than the sum of its proper divisors (78474722).

156949438 is an equidigital number, since it uses as much as digits as its factorization.

156949438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78474721.

The product of its digits is 933120, while the sum is 49.

The square root of 156949438 is about 12527.9462802169. The cubic root of 156949438 is about 539.4111528164.

The spelling of 156949438 in words is "one hundred fifty-six million, nine hundred forty-nine thousand, four hundred thirty-eight".