18795897 has 12 divisors (see below), whose sum is σ = 28746900. Its totient is φ = 11793408.

The previous prime is 18795893. The next prime is 18795919. The reversal of 18795897 is 79859781.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 7160976 = 3411^2 + 2676^2 .

It is not a de Polignac number, because 18795897 - 2² = 18795893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18795893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61272 + ... + 61577.

It is an arithmetic number, because the mean of its divisors is an integer number (2395575).

Almost surely, 2^18795897 is an apocalyptic number.

18795897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18795897 is a deficient number, since it is larger than the sum of its proper divisors (9951003).

18795897 is a wasteful number, since it uses less digits than its factorization.

18795897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122872 (or 122869 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 54.

The square root of 18795897 is about 4335.4235087244. The cubic root of 18795897 is about 265.8812338438.

It can be divided in two parts, 1879 and 5897, that added together give a 5-th power (7776 = 6⁵).

The spelling of 18795897 in words is "eighteen million, seven hundred ninety-five thousand, eight hundred ninety-seven".