1995773 has 4 divisors (see below), whose sum is σ = 2149308. Its totient is φ = 1842240.

The previous prime is 1995769. The next prime is 1995781. The reversal of 1995773 is 3775991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3775991 = 431 ⋅8761.

It can be written as a sum of positive squares in 2 ways, for example, as 643204 + 1352569 = 802^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 1995773 - 2² = 1995769 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 1995773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995713) 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, 76748 + ... + 76773.

It is an arithmetic number, because the mean of its divisors is an integer number (537327).

2^1995773 is an apocalyptic number.

1995773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1995773 is a deficient number, since it is larger than the sum of its proper divisors (153535).

1995773 is a wasteful number, since it uses less digits than its factorization.

1995773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153534.

The product of its digits is 59535, while the sum is 41.

The square root of 1995773 is about 1412.7183017148. The cubic root of 1995773 is about 125.9032809456.

The spelling of 1995773 in words is "one million, nine hundred ninety-five thousand, seven hundred seventy-three".