1988953283 has 4 divisors (see below), whose sum is σ = 1989294120. Its totient is φ = 1988612448.

The previous prime is 1988953249. The next prime is 1988953289. The reversal of 1988953283 is 3823598891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1988953283 - 2¹⁸ = 1988691139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1988953289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161510 + ... + 173387.

It is an arithmetic number, because the mean of its divisors is an integer number (497323530).

Almost surely, 2^1988953283 is an apocalyptic number.

1988953283 is a deficient number, since it is larger than the sum of its proper divisors (340837).

1988953283 is an equidigital number, since it uses as much as digits as its factorization.

1988953283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340836.

The product of its digits is 3732480, while the sum is 56.

The square root of 1988953283 is about 44597.6824846314. The cubic root of 1988953283 is about 1257.5971007471.

The spelling of 1988953283 in words is "one billion, nine hundred eighty-eight million, nine hundred fifty-three thousand, two hundred eighty-three".