1641249 has 16 divisors (see below), whose sum is σ = 2462400. Its totient is φ = 1080288.

The previous prime is 1641229. The next prime is 1641253. The reversal of 1641249 is 9421461.

It is not a de Polignac number, because 1641249 - 2⁵ = 1641217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062 + ... + 2744.

It is an arithmetic number, because the mean of its divisors is an integer number (153900).

2^1641249 is an apocalyptic number.

It is an amenable number.

1641249 is a deficient number, since it is larger than the sum of its proper divisors (821151).

1641249 is an equidigital number, since it uses as much as digits as its factorization.

1641249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 775 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1641249 is about 1281.1124072461. The cubic root of 1641249 is about 117.9573004560.

It can be divided in two parts, 16412 and 49, that added together give a palindrome (16461).

The spelling of 1641249 in words is "one million, six hundred forty-one thousand, two hundred forty-nine".