185340997 has 8 divisors (see below), whose sum is σ = 188874072. Its totient is φ = 181824000.

The previous prime is 185340989. The next prime is 185341003. The reversal of 185340997 is 799043581.

It is a happy number.

It is a Cunningham number, because it is equal to 13614²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1223236 + 184117761 = 1106^2 + 13569^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 185340997 - 2³ = 185340989 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 (185340937) 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, 20673 + ... + 28249.

It is an arithmetic number, because the mean of its divisors is an integer number (23609259).

Almost surely, 2^185340997 is an apocalyptic number.

It is an amenable number.

185340997 is a deficient number, since it is larger than the sum of its proper divisors (3533075).

185340997 is an equidigital number, since it uses as much as digits as its factorization.

185340997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8039.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 185340997 is about 13614.0000367269. Note that the first 4 decimals coincide. The cubic root of 185340997 is about 570.1517980851.

The spelling of 185340997 in words is "one hundred eighty-five million, three hundred forty thousand, nine hundred ninety-seven".