1641546 has 20 divisors (see below), whose sum is σ = 3678642. Its totient is φ = 547128.

The previous prime is 1641539. The next prime is 1641559. The reversal of 1641546 is 6451461.

It can be written as a sum of positive squares in only one way, i.e., 1185921 + 455625 = 1089^2 + 675^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4905 + ... + 5228.

2^1641546 is an apocalyptic number.

1641546 is an abundant number, since it is smaller than the sum of its proper divisors (2037096).

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

1641546 is a wasteful number, since it uses less digits than its factorization.

1641546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10138 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1641546 is about 1281.2283168897. The cubic root of 1641546 is about 117.9644152012.

It can be divided in two parts, 16415 and 46, that added together give a palindrome (16461).

The spelling of 1641546 in words is "one million, six hundred forty-one thousand, five hundred forty-six".