156135449 has 8 divisors (see below), whose sum is σ = 165885960. Its totient is φ = 146676096.

The previous prime is 156135443. The next prime is 156135479. The reversal of 156135449 is 944531651.

It can be written as a sum of positive squares in 4 ways, for example, as 54125449 + 102010000 = 7357^2 + 10100^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156135449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156135443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71684 + ... + 73829.

It is an arithmetic number, because the mean of its divisors is an integer number (20735745).

Almost surely, 2^156135449 is an apocalyptic number.

It is an amenable number.

156135449 is a deficient number, since it is larger than the sum of its proper divisors (9750511).

156135449 is a wasteful number, since it uses less digits than its factorization.

156135449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145579.

The product of its digits is 64800, while the sum is 38.

The square root of 156135449 is about 12495.4171198884. The cubic root of 156135449 is about 538.4770175838.

The spelling of 156135449 in words is "one hundred fifty-six million, one hundred thirty-five thousand, four hundred forty-nine".