187032081 has 4 divisors (see below), whose sum is σ = 249376112. Its totient is φ = 124688052.

The previous prime is 187032061. The next prime is 187032089. The reversal of 187032081 is 180230781.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 187032081 - 2⁶ = 187032017 is a prime.

It is a super-2 number, since 2×187032081² = 69961998646381122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187032089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31172011 + ... + 31172016.

It is an arithmetic number, because the mean of its divisors is an integer number (62344028).

Almost surely, 2^187032081 is an apocalyptic number.

It is an amenable number.

187032081 is a deficient number, since it is larger than the sum of its proper divisors (62344031).

187032081 is an equidigital number, since it uses as much as digits as its factorization.

187032081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62344030.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 187032081 is about 13675.9672784048. The cubic root of 187032081 is about 571.8806059590.

The spelling of 187032081 in words is "one hundred eighty-seven million, thirty-two thousand, eighty-one".