1988798223 has 8 divisors (see below), whose sum is σ = 2651937408. Its totient is φ = 1325762264.

The previous prime is 1988798177. The next prime is 1988798243. The reversal of 1988798223 is 3228978891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1988798223 - 2²⁶ = 1921689359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988798243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58486 + ... + 86012.

It is an arithmetic number, because the mean of its divisors is an integer number (331492176).

Almost surely, 2^1988798223 is an apocalyptic number.

1988798223 is a deficient number, since it is larger than the sum of its proper divisors (663139185).

1988798223 is a wasteful number, since it uses less digits than its factorization.

1988798223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51613.

The product of its digits is 3483648, while the sum is 57.

The square root of 1988798223 is about 44595.9440196079. The cubic root of 1988798223 is about 1257.5644188878.

The spelling of 1988798223 in words is "one billion, nine hundred eighty-eight million, seven hundred ninety-eight thousand, two hundred twenty-three".