1861016 has 16 divisors (see below), whose sum is σ = 3504600. Its totient is φ = 926464.

The previous prime is 1861009. The next prime is 1861019. The reversal of 1861016 is 6101681.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1860982 and 1861000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861019) 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, 2495 + ... + 3153.

2^1861016 is an apocalyptic number.

It is an amenable number.

1861016 is a deficient number, since it is larger than the sum of its proper divisors (1643584).

1861016 is a wasteful number, since it uses less digits than its factorization.

1861016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1861016 is about 1364.1906025186. The cubic root of 1861016 is about 123.0032827907.

Adding to 1861016 its reverse (6101681), we get a palindrome (7962697).

The spelling of 1861016 in words is "one million, eight hundred sixty-one thousand, sixteen".