185083381 has 4 divisors (see below), whose sum is σ = 211523872. Its totient is φ = 158642892.

The previous prime is 185083373. The next prime is 185083411. The reversal of 185083381 is 183380581.

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 185083381 - 2³ = 185083373 is a prime.

It is a super-2 number, since 2×185083381² = 68511715844782322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 185083381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185083781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13220235 + ... + 13220248.

It is an arithmetic number, because the mean of its divisors is an integer number (52880968).

Almost surely, 2^185083381 is an apocalyptic number.

It is an amenable number.

185083381 is a deficient number, since it is larger than the sum of its proper divisors (26440491).

185083381 is an equidigital number, since it uses as much as digits as its factorization.

185083381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26440490.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 185083381 is about 13604.5353099619. The cubic root of 185083381 is about 569.8875134548.

The spelling of 185083381 in words is "one hundred eighty-five million, eighty-three thousand, three hundred eighty-one".