1649241 has 24 divisors (see below), whose sum is σ = 2699424. Its totient is φ = 997920.

The previous prime is 1649237. The next prime is 1649243. The reversal of 1649241 is 1429461.

It is not a de Polignac number, because 1649241 - 2² = 1649237 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1649243) 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, 2365 + ... + 2981.

It is an arithmetic number, because the mean of its divisors is an integer number (112476).

2^1649241 is an apocalyptic number.

1649241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1649241 is a deficient number, since it is larger than the sum of its proper divisors (1050183).

1649241 is an equidigital number, since it uses as much as digits as its factorization.

1649241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 631 counting only the distinct ones).

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

The square root of 1649241 is about 1284.2277835337. The cubic root of 1649241 is about 118.1484533930.

The spelling of 1649241 in words is "one million, six hundred forty-nine thousand, two hundred forty-one".