1641145 has 16 divisors (see below), whose sum is σ = 2192832. Its totient is φ = 1168960.

The previous prime is 1641137. The next prime is 1641161. The reversal of 1641145 is 5411461.

It is not a de Polignac number, because 1641145 - 2³ = 1641137 is a prime.

It is a super-2 number, since 2×1641145² = 5386713822050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2634 + ... + 3196.

It is an arithmetic number, because the mean of its divisors is an integer number (137052).

2^1641145 is an apocalyptic number.

It is an amenable number.

1641145 is a deficient number, since it is larger than the sum of its proper divisors (551687).

1641145 is a wasteful number, since it uses less digits than its factorization.

1641145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its digits is 480, while the sum is 22.

The square root of 1641145 is about 1281.0718168784. The cubic root of 1641145 is about 117.9548088945.

It can be divided in two parts, 1 and 641145, that added together give a palindrome (641146).

The spelling of 1641145 in words is "one million, six hundred forty-one thousand, one hundred forty-five".