180794989 has 4 divisors (see below), whose sum is σ = 181036480. Its totient is φ = 180553500.

The previous prime is 180794969. The next prime is 180795023. The reversal of 180794989 is 989497081.

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 180794989 - 2²¹ = 178697837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180794909) 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, 119619 + ... + 121120.

It is an arithmetic number, because the mean of its divisors is an integer number (45259120).

Almost surely, 2^180794989 is an apocalyptic number.

It is an amenable number.

180794989 is a deficient number, since it is larger than the sum of its proper divisors (241491).

180794989 is an equidigital number, since it uses as much as digits as its factorization.

180794989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241490.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 180794989 is about 13446.0027145617. The cubic root of 180794989 is about 565.4516335645.

The spelling of 180794989 in words is "one hundred eighty million, seven hundred ninety-four thousand, nine hundred eighty-nine".