942180989 has 4 divisors (see below), whose sum is σ = 944485020. Its totient is φ = 939876960.

The previous prime is 942180977. The next prime is 942181003. The reversal of 942180989 is 989081249.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 837118489 + 105062500 = 28933^2 + 10250^2 .

It is a cyclic number.

It is not a de Polignac number, because 942180989 - 2⁴ = 942180973 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 (942180289) 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, 1151402 + ... + 1152219.

It is an arithmetic number, because the mean of its divisors is an integer number (236121255).

Almost surely, 2^942180989 is an apocalyptic number.

It is an amenable number.

942180989 is a deficient number, since it is larger than the sum of its proper divisors (2304031).

942180989 is a wasteful number, since it uses less digits than its factorization.

942180989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304030.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 942180989 is about 30694.9668349715. The cubic root of 942180989 is about 980.3431357759.

The spelling of 942180989 in words is "nine hundred forty-two million, one hundred eighty thousand, nine hundred eighty-nine".