18322965 has 12 divisors (see below), whose sum is σ = 31759884. Its totient is φ = 9772224.

The previous prime is 18322961. The next prime is 18322987. The reversal of 18322965 is 56922381.

It can be written as a sum of positive squares in 2 ways, for example, as 9696996 + 8625969 = 3114^2 + 2937^2 .

It is not a de Polignac number, because 18322965 - 2² = 18322961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18322961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203544 + ... + 203633.

It is an arithmetic number, because the mean of its divisors is an integer number (2646657).

Almost surely, 2^18322965 is an apocalyptic number.

18322965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18322965 is a deficient number, since it is larger than the sum of its proper divisors (13436919).

18322965 is a wasteful number, since it uses less digits than its factorization.

18322965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407188 (or 407185 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 18322965 is about 4280.5332611720. The cubic root of 18322965 is about 263.6322790237.

The spelling of 18322965 in words is "eighteen million, three hundred twenty-two thousand, nine hundred sixty-five".