1518749988 has 48 divisors (see below), whose sum is σ = 4052880384. Its totient is φ = 433620000.

The previous prime is 1518749987. The next prime is 1518750011. The reversal of 1518749988 is 8899478151.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1518749987) 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, 129363 + ... + 140613.

It is an arithmetic number, because the mean of its divisors is an integer number (84435008).

Almost surely, 2^1518749988 is an apocalyptic number.

It is an amenable number.

1518749988 is an abundant number, since it is smaller than the sum of its proper divisors (2534130396).

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

1518749988 is a wasteful number, since it uses less digits than its factorization.

1518749988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12872 (or 12870 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 60.

The square root of 1518749988 is about 38971.1430163397. The cubic root of 1518749988 is about 1149.4641455629.

The spelling of 1518749988 in words is "one billion, five hundred eighteen million, seven hundred forty-nine thousand, nine hundred eighty-eight".