18412537253 has 16 divisors (see below), whose sum is σ = 20423579712. Its totient is φ = 16457904000.

The previous prime is 18412537243. The next prime is 18412537261. The reversal of 18412537253 is 35273521481.

It is a cyclic number.

It is not a de Polignac number, because 18412537253 - 2¹⁰ = 18412536229 is a prime.

It is a super-2 number, since 2×18412537253² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18412537253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18412537243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3005033 + ... + 3011153.

It is an arithmetic number, because the mean of its divisors is an integer number (1276473732).

Almost surely, 2^18412537253 is an apocalyptic number.

It is an amenable number.

18412537253 is a deficient number, since it is larger than the sum of its proper divisors (2011042459).

18412537253 is a wasteful number, since it uses less digits than its factorization.

18412537253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10676.

The product of its digits is 201600, while the sum is 41.

The spelling of 18412537253 in words is "eighteen billion, four hundred twelve million, five hundred thirty-seven thousand, two hundred fifty-three".