1988259 has 16 divisors (see below), whose sum is σ = 3263232. Its totient is φ = 1048608.

The previous prime is 1988257. The next prime is 1988263. The reversal of 1988259 is 9528891.

It is a happy number.

It is not a de Polignac number, because 1988259 - 2¹ = 1988257 is a prime.

1988259 is a lucky number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1988259.

It is not an unprimeable number, because it can be changed into a prime (1988251) 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, 3369 + ... + 3914.

It is an arithmetic number, because the mean of its divisors is an integer number (203952).

2^1988259 is an apocalyptic number.

1988259 is a deficient number, since it is larger than the sum of its proper divisors (1274973).

1988259 is a wasteful number, since it uses less digits than its factorization.

1988259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7306.

The product of its digits is 51840, while the sum is 42.

The square root of 1988259 is about 1410.0563818514. The cubic root of 1988259 is about 125.7450754105.

The spelling of 1988259 in words is "one million, nine hundred eighty-eight thousand, two hundred fifty-nine".