18261751480 has 64 divisors (see below), whose sum is σ = 46971576000. Its totient is φ = 6259467264.

The previous prime is 18261751477. The next prime is 18261751483. The reversal of 18261751480 is 8415716281.

It is an interprime number because it is at equal distance from previous prime (18261751477) and next prime (18261751483).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18261751483) 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, 1446636 + ... + 1459204.

It is an arithmetic number, because the mean of its divisors is an integer number (733930875).

Almost surely, 2^18261751480 is an apocalyptic number.

18261751480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18261751480 is an abundant number, since it is smaller than the sum of its proper divisors (28709824520).

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

18261751480 is a wasteful number, since it uses less digits than its factorization.

18261751480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17776 (or 17772 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 18261751480 in words is "eighteen billion, two hundred sixty-one million, seven hundred fifty-one thousand, four hundred eighty".