18988750 has 40 divisors (see below), whose sum is σ = 38856312. Its totient is φ = 6900000.

The previous prime is 18988729. The next prime is 18988763. The reversal of 18988750 is 5788981.

It is a self number, because there is not a number n which added to its sum of digits gives 18988750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13060 + ... + 14440.

Almost surely, 2^18988750 is an apocalyptic number.

18988750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18988750 is an abundant number, since it is smaller than the sum of its proper divisors (19867562).

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

18988750 is a wasteful number, since it uses less digits than its factorization.

18988750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 18988750 is about 4357.6082889585. The cubic root of 18988750 is about 266.7874886522.

It can be divided in two parts, 1898 and 8750, that added together give a cube (10648 = 22³).

The spelling of 18988750 in words is "eighteen million, nine hundred eighty-eight thousand, seven hundred fifty".