18761528940 has 192 divisors, whose sum is σ = 66473422848. Its totient is φ = 3840249600.

The previous prime is 18761528921. The next prime is 18761528953. The reversal of 18761528940 is 4982516781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 279235 + ... + 339845.

It is an arithmetic number, because the mean of its divisors is an integer number (346215744).

Almost surely, 2^18761528940 is an apocalyptic number.

18761528940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18761528940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33236711424).

18761528940 is an abundant number, since it is smaller than the sum of its proper divisors (47711893908).

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

18761528940 is a wasteful number, since it uses less digits than its factorization.

18761528940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60708 (or 60706 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 18761528940 in words is "eighteen billion, seven hundred sixty-one million, five hundred twenty-eight thousand, nine hundred forty".