18430965 has 24 divisors (see below), whose sum is σ = 36511488. Its totient is φ = 8425440.

The previous prime is 18430943. The next prime is 18431011. The reversal of 18430965 is 56903481.

It is not a de Polignac number, because 18430965 - 2⁷ = 18430837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28941 + ... + 29570.

It is an arithmetic number, because the mean of its divisors is an integer number (1521312).

Almost surely, 2^18430965 is an apocalyptic number.

18430965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18430965 is a deficient number, since it is larger than the sum of its proper divisors (18080523).

18430965 is a wasteful number, since it uses less digits than its factorization.

18430965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58529 (or 58526 counting only the distinct ones).

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

The square root of 18430965 is about 4293.1299770680. The cubic root of 18430965 is about 264.1492355269.

The spelling of 18430965 in words is "eighteen million, four hundred thirty thousand, nine hundred sixty-five".