1849316989 has 8 divisors (see below), whose sum is σ = 2003792672. Its totient is φ = 1696587120.

The previous prime is 1849316971. The next prime is 1849317007. The reversal of 1849316989 is 9896139481.

It is an interprime number because it is at equal distance from previous prime (1849316971) and next prime (1849317007).

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 1849316989 - 2¹¹ = 1849314941 is a prime.

It is a super-2 number, since 2×1849316989² = 6839946651608052242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849316939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434247 + ... + 438484.

It is an arithmetic number, because the mean of its divisors is an integer number (250474084).

Almost surely, 2^1849316989 is an apocalyptic number.

It is an amenable number.

1849316989 is a deficient number, since it is larger than the sum of its proper divisors (154475683).

1849316989 is a wasteful number, since it uses less digits than its factorization.

1849316989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872907.

The product of its digits is 3359232, while the sum is 58.

The square root of 1849316989 is about 43003.6857606415. The cubic root of 1849316989 is about 1227.4499328207.

The spelling of 1849316989 in words is "one billion, eight hundred forty-nine million, three hundred sixteen thousand, nine hundred eighty-nine".