1861652 has 12 divisors (see below), whose sum is σ = 3508596. Its totient is φ = 859200.

The previous prime is 1861649. The next prime is 1861661. The reversal of 1861652 is 2561681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 309136 + 1552516 = 556^2 + 1246^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17849 + ... + 17952.

It is an arithmetic number, because the mean of its divisors is an integer number (292383).

2^1861652 is an apocalyptic number.

It is an amenable number.

1861652 is a deficient number, since it is larger than the sum of its proper divisors (1646944).

1861652 is a wasteful number, since it uses less digits than its factorization.

1861652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35818 (or 35816 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 1861652 is about 1364.4236878624. The cubic root of 1861652 is about 123.0172932699.

Adding to 1861652 its sum of digits (29), we get a palindrome (1861681).

The spelling of 1861652 in words is "one million, eight hundred sixty-one thousand, six hundred fifty-two".