18254779488 has 120 divisors (see below), whose sum is σ = 58567509000. Its totient is φ = 5531742720.

The previous prime is 18254779481. The next prime is 18254779489. The reversal of 18254779488 is 88497745281.

18254779488 is a `hidden beast` number, since 1 + 8 + 2 + 547 + 7 + 9 + 4 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18254779481) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 291613 + ... + 348636.

It is an arithmetic number, because the mean of its divisors is an integer number (488062575).

Almost surely, 2^18254779488 is an apocalyptic number.

18254779488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18254779488 is an abundant number, since it is smaller than the sum of its proper divisors (40312729512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18254779488 is a wasteful number, since it uses less digits than its factorization.

18254779488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640282 (or 640265 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 18254779488 in words is "eighteen billion, two hundred fifty-four million, seven hundred seventy-nine thousand, four hundred eighty-eight".