1869384345 has 64 divisors (see below), whose sum is σ = 3288646656. Its totient is φ = 902983680.

The previous prime is 1869384343. The next prime is 1869384367. The reversal of 1869384345 is 5434839681.

It is not a de Polignac number, because 1869384345 - 2¹ = 1869384343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1869384343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 729807 + ... + 732363.

It is an arithmetic number, because the mean of its divisors is an integer number (51385104).

Almost surely, 2^1869384345 is an apocalyptic number.

1869384345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1869384345 is a deficient number, since it is larger than the sum of its proper divisors (1419262311).

1869384345 is a wasteful number, since it uses less digits than its factorization.

1869384345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690.

The product of its digits is 2488320, while the sum is 51.

The square root of 1869384345 is about 43236.3775656564. The cubic root of 1869384345 is about 1231.8737486669.

The spelling of 1869384345 in words is "one billion, eight hundred sixty-nine million, three hundred eighty-four thousand, three hundred forty-five".