1898061 has 16 divisors (see below), whose sum is σ = 2790720. Its totient is φ = 1137920.

The previous prime is 1898053. The next prime is 1898069. The reversal of 1898061 is 1608981.

It is an interprime number because it is at equal distance from previous prime (1898053) and next prime (1898069).

It is a cyclic number.

It is not a de Polignac number, because 1898061 - 2³ = 1898053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3475 + ... + 3983.

It is an arithmetic number, because the mean of its divisors is an integer number (174420).

2^1898061 is an apocalyptic number.

1898061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1898061 is a deficient number, since it is larger than the sum of its proper divisors (892659).

1898061 is a wasteful number, since it uses less digits than its factorization.

1898061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1898061 is about 1377.7013464463. The cubic root of 1898061 is about 123.8140857740.

The spelling of 1898061 in words is "one million, eight hundred ninety-eight thousand, sixty-one".