1899999472 has 40 divisors (see below), whose sum is σ = 4215346272. Its totient is φ = 812697600.

The previous prime is 1899999401. The next prime is 1899999473. The reversal of 1899999472 is 2749999981.

It is a junction number, because it is equal to n+sod(n) for n = 1899999398 and 1899999407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899999473) 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 7 ways as a sum of consecutive naturals, for example, 42072 + ... + 74632.

Almost surely, 2^1899999472 is an apocalyptic number.

It is an amenable number.

1899999472 is an abundant number, since it is smaller than the sum of its proper divisors (2315346800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1899999472 is a wasteful number, since it uses less digits than its factorization.

1899999472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33097 (or 33091 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 67.

The square root of 1899999472 is about 43588.9833788309. The cubic root of 1899999472 is about 1238.5622149002.

The spelling of 1899999472 in words is "one billion, eight hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred seventy-two".