1641045 has 16 divisors (see below), whose sum is σ = 3000960. Its totient is φ = 750144.

The previous prime is 1641043. The next prime is 1641053. The reversal of 1641045 is 5401461.

It is not a de Polignac number, because 1641045 - 2¹ = 1641043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641043) 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, 7710 + ... + 7919.

It is an arithmetic number, because the mean of its divisors is an integer number (187560).

2^1641045 is an apocalyptic number.

1641045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1641045 is a deficient number, since it is larger than the sum of its proper divisors (1359915).

1641045 is a wasteful number, since it uses less digits than its factorization.

1641045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15644.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1641045 is about 1281.0327864657. The cubic root of 1641045 is about 117.9524130630.

The spelling of 1641045 in words is "one million, six hundred forty-one thousand, forty-five".