156561846 has 16 divisors (see below), whose sum is σ = 357855744. Its totient is φ = 44731944.

The previous prime is 156561803. The next prime is 156561863. The reversal of 156561846 is 648165651.

It is a super-2 number, since 2×156561846² = 49023223245855432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3727663 = 156561846 / (1 + 5 + 6 + 5 + 6 + 1 + 8 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 156561798 and 156561807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863790 + ... + 1863873.

It is an arithmetic number, because the mean of its divisors is an integer number (22365984).

Almost surely, 2^156561846 is an apocalyptic number.

156561846 is an abundant number, since it is smaller than the sum of its proper divisors (201293898).

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

156561846 is a wasteful number, since it uses less digits than its factorization.

156561846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727675.

The product of its digits is 172800, while the sum is 42.

The square root of 156561846 is about 12512.4676223357. The cubic root of 156561846 is about 538.9667553727.

The spelling of 156561846 in words is "one hundred fifty-six million, five hundred sixty-one thousand, eight hundred forty-six".