156800149 has 6 divisors (see below), whose sum is σ = 172350710. Its totient is φ = 142545480.

The previous prime is 156800101. The next prime is 156800173. The reversal of 156800149 is 941008651.

It can be written as a sum of positive squares in only one way, i.e., 106461124 + 50339025 = 10318^2 + 7095^2 .

It is a de Polignac number, because none of the positive numbers 2^k-156800149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156810149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 647814 + ... + 648055.

Almost surely, 2^156800149 is an apocalyptic number.

It is an amenable number.

156800149 is a deficient number, since it is larger than the sum of its proper divisors (15550561).

156800149 is a wasteful number, since it uses less digits than its factorization.

156800149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295891 (or 1295880 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 156800149 is about 12521.9866235354. The cubic root of 156800149 is about 539.2400707603.

The spelling of 156800149 in words is "one hundred fifty-six million, eight hundred thousand, one hundred forty-nine".