185083989 has 8 divisors (see below), whose sum is σ = 246970752. Its totient is φ = 123293280.

The previous prime is 185083961. The next prime is 185083993. The reversal of 185083989 is 989380581.

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

It is not a de Polignac number, because 185083989 - 2⁷ = 185083861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185083189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19389 + ... + 27314.

It is an arithmetic number, because the mean of its divisors is an integer number (30871344).

Almost surely, 2^185083989 is an apocalyptic number.

It is an amenable number.

185083989 is a deficient number, since it is larger than the sum of its proper divisors (61886763).

185083989 is a wasteful number, since it uses less digits than its factorization.

185083989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48027.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 185083989 is about 13604.5576554330. The cubic root of 185083989 is about 569.8881374821. Note that the first 3 decimals are identical.

The spelling of 185083989 in words is "one hundred eighty-five million, eighty-three thousand, nine hundred eighty-nine".