1988763 has 24 divisors (see below), whose sum is σ = 3140928. Its totient is φ = 1115856.

The previous prime is 1988759. The next prime is 1988797. The reversal of 1988763 is 3678891.

It is not a de Polignac number, because 1988763 - 2² = 1988759 is a prime.

It is a super-5 number, since 5×1988763⁵ (a number of 33 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (1988263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12120 + ... + 12282.

It is an arithmetic number, because the mean of its divisors is an integer number (130872).

2^1988763 is an apocalyptic number.

1988763 is a deficient number, since it is larger than the sum of its proper divisors (1152165).

1988763 is a wasteful number, since it uses less digits than its factorization.

1988763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 256 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 1988763 is about 1410.2350867852. The cubic root of 1988763 is about 125.7556994730.

The spelling of 1988763 in words is "one million, nine hundred eighty-eight thousand, seven hundred sixty-three".