1994530 has 8 divisors (see below), whose sum is σ = 3590172. Its totient is φ = 797808.

The previous prime is 1994521. The next prime is 1994543. The reversal of 1994530 is 354991.

1994530 = 152² + 153² + ... + 211².

It can be written as a sum of positive squares in 2 ways, for example, as 1798281 + 196249 = 1341^2 + 443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1994492 and 1994501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99717 + ... + 99736.

2^1994530 is an apocalyptic number.

1994530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1994530 is a deficient number, since it is larger than the sum of its proper divisors (1595642).

1994530 is a wasteful number, since it uses less digits than its factorization.

1994530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199460.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1994530 is about 1412.2783011857. The cubic root of 1994530 is about 125.8771373111.

It can be divided in two parts, 19 and 94530, that added together give a palindrome (94549).

The spelling of 1994530 in words is "one million, nine hundred ninety-four thousand, five hundred thirty".