1899731473 has 8 divisors (see below), whose sum is σ = 2023812000. Its totient is φ = 1778060448.

The previous prime is 1899731369. The next prime is 1899731489. The reversal of 1899731473 is 3741379981.

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 1899731473 - 2²⁵ = 1866177041 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 1899731473.

It is not an unprimeable number, because it can be changed into a prime (1899735473) 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, 600748 + ... + 603901.

It is an arithmetic number, because the mean of its divisors is an integer number (252976500).

Almost surely, 2^1899731473 is an apocalyptic number.

It is an amenable number.

1899731473 is a deficient number, since it is larger than the sum of its proper divisors (124080527).

1899731473 is a wasteful number, since it uses less digits than its factorization.

1899731473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204751.

The product of its digits is 1143072, while the sum is 52.

The square root of 1899731473 is about 43585.9091106289. The cubic root of 1899731473 is about 1238.5039782098.

It can be divided in two parts, 189973147 and 3, that multiplied together give a triangular number (569919441 = T₃₃₇₆₁).

The spelling of 1899731473 in words is "one billion, eight hundred ninety-nine million, seven hundred thirty-one thousand, four hundred seventy-three".