18393303453 has 32 divisors (see below), whose sum is σ = 28486926336. Its totient is φ = 10339083648.

The previous prime is 18393303421. The next prime is 18393303463. The reversal of 18393303453 is 35430339381.

It is not a de Polignac number, because 18393303453 - 2⁵ = 18393303421 is a prime.

It is a super-2 number, since 2×18393303453² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18393303413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571476 + ... + 602802.

It is an arithmetic number, because the mean of its divisors is an integer number (890216448).

Almost surely, 2^18393303453 is an apocalyptic number.

It is an amenable number.

18393303453 is a deficient number, since it is larger than the sum of its proper divisors (10093622883).

18393303453 is a wasteful number, since it uses less digits than its factorization.

18393303453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31793.

The product of its (nonzero) digits is 349920, while the sum is 42.

The spelling of 18393303453 in words is "eighteen billion, three hundred ninety-three million, three hundred three thousand, four hundred fifty-three".