1900073 has 12 divisors (see below), whose sum is σ = 2341332. Its totient is φ = 1532160.

The previous prime is 1900049. The next prime is 1900079. The reversal of 1900073 is 3700091.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 582169 = 1148^2 + 763^2 .

It is not a de Polignac number, because 1900073 - 2⁶ = 1900009 is a prime.

It is a super-2 number, since 2×1900073² = 7220554810658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308 + ... + 1973.

It is an arithmetic number, because the mean of its divisors is an integer number (195111).

2^1900073 is an apocalyptic number.

It is an amenable number.

1900073 is a deficient number, since it is larger than the sum of its proper divisors (441259).

1900073 is a wasteful number, since it uses less digits than its factorization.

1900073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 1900073 is about 1378.4313548378. The cubic root of 1900073 is about 123.8578191717.

The spelling of 1900073 in words is "one million, nine hundred thousand, seventy-three".