1900394273 has 4 divisors (see below), whose sum is σ = 1965925140. Its totient is φ = 1834863408.

The previous prime is 1900394227. The next prime is 1900394299. The reversal of 1900394273 is 3724930091.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1249481104 + 650913169 = 35348^2 + 25513^2 .

It is not a de Polignac number, because 1900394273 - 2¹⁰ = 1900393249 is a prime.

It is a super-2 number, since 2×1900394273² = 7222996785702397058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1900394213) 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, 32765390 + ... + 32765447.

It is an arithmetic number, because the mean of its divisors is an integer number (491481285).

Almost surely, 2^1900394273 is an apocalyptic number.

It is an amenable number.

1900394273 is a deficient number, since it is larger than the sum of its proper divisors (65530867).

1900394273 is an equidigital number, since it uses as much as digits as its factorization.

1900394273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65530866.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 1900394273 is about 43593.5118222884. The cubic root of 1900394273 is about 1238.6479959304.

The spelling of 1900394273 in words is "one billion, nine hundred million, three hundred ninety-four thousand, two hundred seventy-three".