1854988849 has 8 divisors (see below), whose sum is σ = 2120338880. Its totient is φ = 1589726736.

The previous prime is 1854988843. The next prime is 1854988859. The reversal of 1854988849 is 9488894581.

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 1854988849 - 2³ = 1854988841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1854988841) 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, 32122 + ... + 68860.

It is an arithmetic number, because the mean of its divisors is an integer number (265042360).

Almost surely, 2^1854988849 is an apocalyptic number.

It is an amenable number.

1854988849 is a deficient number, since it is larger than the sum of its proper divisors (265350031).

1854988849 is an equidigital number, since it uses as much as digits as its factorization.

1854988849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43959.

The product of its digits is 26542080, while the sum is 64.

The square root of 1854988849 is about 43069.5814815979. The cubic root of 1854988849 is about 1228.7035161539.

The spelling of 1854988849 in words is "one billion, eight hundred fifty-four million, nine hundred eighty-eight thousand, eight hundred forty-nine".