18230227402 has 32 divisors (see below), whose sum is σ = 27925793280. Its totient is φ = 8924023920.

The previous prime is 18230227391. The next prime is 18230227429. The reversal of 18230227402 is 20472203281.

It is a super-2 number, since 2×18230227402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9210849 + ... + 9212827.

It is an arithmetic number, because the mean of its divisors is an integer number (872681040).

Almost surely, 2^18230227402 is an apocalyptic number.

18230227402 is a deficient number, since it is larger than the sum of its proper divisors (9695565878).

18230227402 is a wasteful number, since it uses less digits than its factorization.

18230227402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538.

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 18230227402 in words is "eighteen billion, two hundred thirty million, two hundred twenty-seven thousand, four hundred two".