1988523 has 16 divisors (see below), whose sum is σ = 3010560. Its totient is φ = 1296648.

The previous prime is 1988513. The next prime is 1988531. The reversal of 1988523 is 3258891.

It is not a de Polignac number, because 1988523 - 2⁸ = 1988267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1988513) 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, 486 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (188160).

2^1988523 is an apocalyptic number.

1988523 is a deficient number, since it is larger than the sum of its proper divisors (1022037).

1988523 is a wasteful number, since it uses less digits than its factorization.

1988523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1617 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1988523 is about 1410.1499920221. The cubic root of 1988523 is about 125.7506406195.

The spelling of 1988523 in words is "one million, nine hundred eighty-eight thousand, five hundred twenty-three".