18273075428 has 12 divisors (see below), whose sum is σ = 33660928560. Its totient is φ = 8655667272.

The previous prime is 18273075427. The next prime is 18273075451. The reversal of 18273075428 is 82457037281.

It is not an unprimeable number, because it can be changed into a prime (18273075427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120217526 + ... + 120217677.

It is an arithmetic number, because the mean of its divisors is an integer number (2805077380).

Almost surely, 2^18273075428 is an apocalyptic number.

It is an amenable number.

18273075428 is a deficient number, since it is larger than the sum of its proper divisors (15387853132).

18273075428 is a wasteful number, since it uses less digits than its factorization.

18273075428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240435226 (or 240435224 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 18273075428 in words is "eighteen billion, two hundred seventy-three million, seventy-five thousand, four hundred twenty-eight".