18755973 has 12 divisors (see below), whose sum is σ = 27164748. Its totient is φ = 12470400.

The previous prime is 18755969. The next prime is 18755977. The reversal of 18755973 is 37955781.

It is an interprime number because it is at equal distance from previous prime (18755969) and next prime (18755977).

It can be written as a sum of positive squares in 2 ways, for example, as 15000129 + 3755844 = 3873^2 + 1938^2 .

It is not a de Polignac number, because 18755973 - 2² = 18755969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18755977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1011 + ... + 6207.

It is an arithmetic number, because the mean of its divisors is an integer number (2263729).

Almost surely, 2^18755973 is an apocalyptic number.

It is an amenable number.

18755973 is a deficient number, since it is larger than the sum of its proper divisors (8408775).

18755973 is a wasteful number, since it uses less digits than its factorization.

18755973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5604 (or 5601 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 18755973 is about 4330.8166666346. The cubic root of 18755973 is about 265.6928493435.

The spelling of 18755973 in words is "eighteen million, seven hundred fifty-five thousand, nine hundred seventy-three".