1850490 has 48 divisors (see below), whose sum is σ = 4984200. Its totient is φ = 475776.

The previous prime is 1850489. The next prime is 1850491. The reversal of 1850490 is 940581.

It is an interprime number because it is at equal distance from previous prime (1850489) and next prime (1850491).

It can be written as a sum of positive squares in 4 ways, for example, as 1159929 + 690561 = 1077^2 + 831^2 .

It is not an unprimeable number, because it can be changed into a prime (1850491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2256 + ... + 2964.

2^1850490 is an apocalyptic number.

1850490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1850490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492100).

1850490 is an abundant number, since it is smaller than the sum of its proper divisors (3133710).

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

1850490 is a wasteful number, since it uses less digits than its factorization.

1850490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1850490 is about 1360.3271665302. The cubic root of 1850490 is about 122.7709399418.

Subtracting from 1850490 its reverse (940581), we obtain a palindrome (909909).

The spelling of 1850490 in words is "one million, eight hundred fifty thousand, four hundred ninety".