18430957 has 8 divisors (see below), whose sum is σ = 19112192. Its totient is φ = 17755200.

The previous prime is 18430943. The next prime is 18431011. The reversal of 18430957 is 75903481.

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 18430957 - 2¹¹ = 18428909 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 (18430757) 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, 6238 + ... + 8704.

It is an arithmetic number, because the mean of its divisors is an integer number (2389024).

Almost surely, 2^18430957 is an apocalyptic number.

It is an amenable number.

18430957 is a deficient number, since it is larger than the sum of its proper divisors (681235).

18430957 is a wasteful number, since it uses less digits than its factorization.

18430957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 18430957 is about 4293.1290453468. The cubic root of 18430957 is about 264.1491973087.

The spelling of 18430957 in words is "eighteen million, four hundred thirty thousand, nine hundred fifty-seven".