132018781 has 4 divisors (see below), whose sum is σ = 137758752. Its totient is φ = 126278812.

The previous prime is 132018779. The next prime is 132018791. The reversal of 132018781 is 187810231.

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 a cyclic number.

It is not a de Polignac number, because 132018781 - 2¹ = 132018779 is a prime.

It is a super-2 number, since 2×132018781² = 34857917073451922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132018751) 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, 2869951 + ... + 2869996.

It is an arithmetic number, because the mean of its divisors is an integer number (34439688).

Almost surely, 2^132018781 is an apocalyptic number.

It is an amenable number.

132018781 is a deficient number, since it is larger than the sum of its proper divisors (5739971).

132018781 is an equidigital number, since it uses as much as digits as its factorization.

132018781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739970.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 132018781 is about 11489.9426021195. The cubic root of 132018781 is about 509.1884838395.

The spelling of 132018781 in words is "one hundred thirty-two million, eighteen thousand, seven hundred eighty-one".