1878998 has 16 divisors (see below), whose sum is σ = 3096576. Its totient is φ = 848040.

The previous prime is 1878991. The next prime is 1879049. The reversal of 1878998 is 8998781.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878991) 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 7 ways as a sum of consecutive naturals, for example, 4715 + ... + 5097.

It is an arithmetic number, because the mean of its divisors is an integer number (193536).

2^1878998 is an apocalyptic number.

1878998 is a deficient number, since it is larger than the sum of its proper divisors (1217578).

1878998 is a wasteful number, since it uses less digits than its factorization.

1878998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its digits is 290304, while the sum is 50.

The square root of 1878998 is about 1370.7654795770. The cubic root of 1878998 is about 123.3981851936.

The spelling of 1878998 in words is "one million, eight hundred seventy-eight thousand, nine hundred ninety-eight".