1898816 has 14 divisors (see below), whose sum is σ = 3768090. Its totient is φ = 949376.

The previous prime is 1898807. The next prime is 1898861. The reversal of 1898816 is 6188981.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 817216 = 1040^2 + 904^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14771 + ... + 14898.

2^1898816 is an apocalyptic number.

1898816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1898816 is a deficient number, since it is larger than the sum of its proper divisors (1869274).

1898816 is an equidigital number, since it uses as much as digits as its factorization.

1898816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29681 (or 29671 counting only the distinct ones).

The product of its digits is 27648, while the sum is 41.

The square root of 1898816 is about 1377.9753263393. The cubic root of 1898816 is about 123.8305002873.

The spelling of 1898816 in words is "one million, eight hundred ninety-eight thousand, eight hundred sixteen".