156429018 has 24 divisors (see below), whose sum is σ = 339506388. Its totient is φ = 52054272.

The previous prime is 156429011. The next prime is 156429029. The reversal of 156429018 is 810924651.

156429018 is a `hidden beast` number, since 1 + 5 + 642 + 9 + 0 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 156425049 + 3969 = 12507^2 + 63^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156429011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3946 + ... + 18122.

Almost surely, 2^156429018 is an apocalyptic number.

156429018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

156429018 is an abundant number, since it is smaller than the sum of its proper divisors (183077370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156429018 is a wasteful number, since it uses less digits than its factorization.

156429018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14798 (or 14795 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 156429018 is about 12507.1586701377. The cubic root of 156429018 is about 538.8142913820.

The spelling of 156429018 in words is "one hundred fifty-six million, four hundred twenty-nine thousand, eighteen".