1898365 has 16 divisors (see below), whose sum is σ = 2642688. Its totient is φ = 1282176.

The previous prime is 1898363. The next prime is 1898371. The reversal of 1898365 is 5638981.

1898365 = T₆ + T₇ + ... + T₂₂₄.

1898365 = 79² + 80² + ... + 183².

It is a happy number.

It is not a de Polignac number, because 1898365 - 2¹ = 1898363 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2184 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (165168).

2^1898365 is an apocalyptic number.

It is an amenable number.

1898365 is a deficient number, since it is larger than the sum of its proper divisors (744323).

1898365 is an equidigital number, since it uses as much as digits as its factorization.

1898365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its digits is 51840, while the sum is 40.

The square root of 1898365 is about 1377.8116707301. The cubic root of 1898365 is about 123.8206955848.

The spelling of 1898365 in words is "one million, eight hundred ninety-eight thousand, three hundred sixty-five".