1898065 has 8 divisors (see below), whose sum is σ = 2452968. Its totient is φ = 1401600.

The previous prime is 1898053. The next prime is 1898069. The reversal of 1898065 is 5608981.

It can be written as a sum of positive squares in 4 ways, for example, as 1936 + 1896129 = 44^2 + 1377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1898065 - 2¹¹ = 1896017 is a prime.

It is a Duffinian number.

1898065 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1898069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14536 + ... + 14665.

It is an arithmetic number, because the mean of its divisors is an integer number (306621).

2^1898065 is an apocalyptic number.

It is an amenable number.

1898065 is a deficient number, since it is larger than the sum of its proper divisors (554903).

1898065 is a wasteful number, since it uses less digits than its factorization.

1898065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29219.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1898065 is about 1377.7027981390. The cubic root of 1898065 is about 123.8141727497.

The spelling of 1898065 in words is "one million, eight hundred ninety-eight thousand, sixty-five".