1894328099 has 4 divisors (see below), whose sum is σ = 1925382720. Its totient is φ = 1863273480.

The previous prime is 1894328087. The next prime is 1894328131. The reversal of 1894328099 is 9908234981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9908234981 = 223 ⋅44431547.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1894328099 is a prime.

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 1894328099.

It is not an unprimeable number, because it can be changed into a prime (1894328299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15527219 + ... + 15527340.

It is an arithmetic number, because the mean of its divisors is an integer number (481345680).

Almost surely, 2^1894328099 is an apocalyptic number.

1894328099 is a deficient number, since it is larger than the sum of its proper divisors (31054621).

1894328099 is an equidigital number, since it uses as much as digits as its factorization.

1894328099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31054620.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 1894328099 is about 43523.8796409511. The cubic root of 1894328099 is about 1237.3286445592.

The spelling of 1894328099 in words is "one billion, eight hundred ninety-four million, three hundred twenty-eight thousand, ninety-nine".