1641536 has 28 divisors (see below), whose sum is σ = 3509772. Its totient is φ = 757248.

The previous prime is 1641509. The next prime is 1641539. The reversal of 1641536 is 6351461.

It can be written as a sum of positive squares in 2 ways, for example, as 295936 + 1345600 = 544^2 + 1160^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1641539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 1818.

It is an arithmetic number, because the mean of its divisors is an integer number (125349).

2^1641536 is an apocalyptic number.

1641536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1641536 is an abundant number, since it is smaller than the sum of its proper divisors (1868236).

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

1641536 is a wasteful number, since it uses less digits than its factorization.

1641536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1988 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 1641536 is about 1281.2244143787. The cubic root of 1641536 is about 117.9641756614.

1641536 divided by its sum of digits (26) gives a palindrome (63136).

Adding to 1641536 its reverse (6351461), we get a palindrome (7992997).

The spelling of 1641536 in words is "one million, six hundred forty-one thousand, five hundred thirty-six".