1854149489 has 8 divisors (see below), whose sum is σ = 1965086568. Its totient is φ = 1743420160.

The previous prime is 1854149467. The next prime is 1854149497. The reversal of 1854149489 is 9849414581.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 310288225 + 1543861264 = 17615^2 + 39292^2 .

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 1854149489 - 2⁸ = 1854149233 is a prime.

It is a super-2 number, since 2×1854149489² = 6875740655117922242, which contains 22 as substring.

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 1854149489.

It is not an unprimeable number, because it can be changed into a prime (1854149419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33362 + ... + 69435.

It is an arithmetic number, because the mean of its divisors is an integer number (245635821).

Almost surely, 2^1854149489 is an apocalyptic number.

It is an amenable number.

1854149489 is a deficient number, since it is larger than the sum of its proper divisors (110937079).

1854149489 is a wasteful number, since it uses less digits than its factorization.

1854149489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103875.

The product of its digits is 1658880, while the sum is 53.

The square root of 1854149489 is about 43059.8361469247. The cubic root of 1854149489 is about 1228.5181637052.

The spelling of 1854149489 in words is "one billion, eight hundred fifty-four million, one hundred forty-nine thousand, four hundred eighty-nine".