1989582275 has 6 divisors (see below), whose sum is σ = 2467082052. Its totient is φ = 1591665800.

The previous prime is 1989582269. The next prime is 1989582337. The reversal of 1989582275 is 5722859891.

It is not a de Polignac number, because 1989582275 - 2¹⁸ = 1989320131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1989582275.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39791621 + ... + 39791670.

It is an arithmetic number, because the mean of its divisors is an integer number (411180342).

Almost surely, 2^1989582275 is an apocalyptic number.

1989582275 is a deficient number, since it is larger than the sum of its proper divisors (477499777).

1989582275 is an equidigital number, since it uses as much as digits as its factorization.

1989582275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79583301 (or 79583296 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 56.

The square root of 1989582275 is about 44604.7337734461. The cubic root of 1989582275 is about 1257.7296554184.

The spelling of 1989582275 in words is "one billion, nine hundred eighty-nine million, five hundred eighty-two thousand, two hundred seventy-five".