1798930 has 32 divisors (see below), whose sum is σ = 3824640. Its totient is φ = 596160.

The previous prime is 1798921. The next prime is 1798931. The reversal of 1798930 is 398971.

1798930 = T₄ + T₅ + ... + T₂₂₀.

1798930 = 21² + 22² + ... + 175².

It is a super-2 number, since 2×1798930² = 6472298289800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1798930.

It is not an unprimeable number, because it can be changed into a prime (1798931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756 + ... + 2584.

It is an arithmetic number, because the mean of its divisors is an integer number (119520).

2^1798930 is an apocalyptic number.

1798930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1798930 is an abundant number, since it is smaller than the sum of its proper divisors (2025710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1798930 is a wasteful number, since it uses less digits than its factorization.

1798930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1798930 is about 1341.2419617653. The cubic root of 1798930 is about 121.6199315926.

The spelling of 1798930 in words is "one million, seven hundred ninety-eight thousand, nine hundred thirty".