1989637114 has 4 divisors (see below), whose sum is σ = 2984455674. Its totient is φ = 994818556.

The previous prime is 1989637093. The next prime is 1989637127. The reversal of 1989637114 is 4117369891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4117369891 = 52553 ⋅78347.

It can be written as a sum of positive squares in only one way, i.e., 1456719889 + 532917225 = 38167^2 + 23085^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497409277 + ... + 497409280.

Almost surely, 2^1989637114 is an apocalyptic number.

1989637114 is a deficient number, since it is larger than the sum of its proper divisors (994818560).

1989637114 is an equidigital number, since it uses as much as digits as its factorization.

1989637114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994818559.

The product of its digits is 326592, while the sum is 49.

The square root of 1989637114 is about 44605.3484909601. The cubic root of 1989637114 is about 1257.7412109433.

The spelling of 1989637114 in words is "one billion, nine hundred eighty-nine million, six hundred thirty-seven thousand, one hundred fourteen".