1899334994 has 4 divisors (see below), whose sum is σ = 2849002494. Its totient is φ = 949667496.

The previous prime is 1899334993. The next prime is 1899334999. The reversal of 1899334994 is 4994339981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1833124225 + 66210769 = 42815^2 + 8137^2 .

It is not an unprimeable number, because it can be changed into a prime (1899334993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474833747 + ... + 474833750.

Almost surely, 2^1899334994 is an apocalyptic number.

1899334994 is a deficient number, since it is larger than the sum of its proper divisors (949667500).

1899334994 is an equidigital number, since it uses as much as digits as its factorization.

1899334994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949667499.

The product of its digits is 7558272, while the sum is 59.

The square root of 1899334994 is about 43581.3606258455. The cubic root of 1899334994 is about 1238.4178125262.

The spelling of 1899334994 in words is "one billion, eight hundred ninety-nine million, three hundred thirty-four thousand, nine hundred ninety-four".