18227211783 has 16 divisors (see below), whose sum is σ = 26547367296. Its totient is φ = 11032187040.

The previous prime is 18227211773. The next prime is 18227211791. The reversal of 18227211783 is 38711272281.

It is not a de Polignac number, because 18227211783 - 2¹⁰ = 18227210759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18227211773) 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, 339841 + ... + 389802.

It is an arithmetic number, because the mean of its divisors is an integer number (1659210456).

Almost surely, 2^18227211783 is an apocalyptic number.

18227211783 is a deficient number, since it is larger than the sum of its proper divisors (8320155513).

18227211783 is a wasteful number, since it uses less digits than its factorization.

18227211783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730414.

The product of its digits is 75264, while the sum is 42.

The spelling of 18227211783 in words is "eighteen billion, two hundred twenty-seven million, two hundred eleven thousand, seven hundred eighty-three".