1900444473 has 12 divisors (see below), whose sum is σ = 2751643440. Its totient is φ = 1263936696.

The previous prime is 1900444459. The next prime is 1900444477. The reversal of 1900444473 is 3744440091.

It is not a de Polignac number, because 1900444473 - 2¹³ = 1900436281 is a prime.

It is a super-2 number, since 2×1900444473² = 7223378389912495458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1900444477) 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 11 ways as a sum of consecutive naturals, for example, 248211 + ... + 255752.

It is an arithmetic number, because the mean of its divisors is an integer number (229303620).

Almost surely, 2^1900444473 is an apocalyptic number.

It is an amenable number.

1900444473 is a deficient number, since it is larger than the sum of its proper divisors (851198967).

1900444473 is a wasteful number, since it uses less digits than its factorization.

1900444473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504388 (or 504385 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1900444473 is about 43594.0875922412. The cubic root of 1900444473 is about 1238.6589023657.

The spelling of 1900444473 in words is "one billion, nine hundred million, four hundred forty-four thousand, four hundred seventy-three".