185121130 has 8 divisors (see below), whose sum is σ = 333218052. Its totient is φ = 74048448.

The previous prime is 185121127. The next prime is 185121133. The reversal of 185121130 is 31121581.

It is an interprime number because it is at equal distance from previous prime (185121127) and next prime (185121133).

It can be written as a sum of positive squares in 2 ways, for example, as 161569521 + 23551609 = 12711^2 + 4853^2 .

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

It is not an unprimeable number, because it can be changed into a prime (185121133) 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 3 ways as a sum of consecutive naturals, for example, 9256047 + ... + 9256066.

Almost surely, 2^185121130 is an apocalyptic number.

185121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

185121130 is a deficient number, since it is larger than the sum of its proper divisors (148096922).

185121130 is a wasteful number, since it uses less digits than its factorization.

185121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18512120.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 185121130 is about 13605.9226074530. The cubic root of 185121130 is about 569.9262549511.

The spelling of 185121130 in words is "one hundred eighty-five million, one hundred twenty-one thousand, one hundred thirty".