185156830 has 16 divisors (see below), whose sum is σ = 334128960. Its totient is φ = 73874592.

The previous prime is 185156819. The next prime is 185156837. The reversal of 185156830 is 38651581.

It is a self number, because there is not a number n which added to its sum of digits gives 185156830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185156837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19350 + ... + 27289.

It is an arithmetic number, because the mean of its divisors is an integer number (20883060).

Almost surely, 2^185156830 is an apocalyptic number.

185156830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

185156830 is a deficient number, since it is larger than the sum of its proper divisors (148972130).

185156830 is a wasteful number, since it uses less digits than its factorization.

185156830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47043.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 185156830 is about 13607.2344728824. The cubic root of 185156830 is about 569.9628887298.

The spelling of 185156830 in words is "one hundred eighty-five million, one hundred fifty-six thousand, eight hundred thirty".