1861074 has 12 divisors (see below), whose sum is σ = 4032366. Its totient is φ = 620352.

The previous prime is 1861061. The next prime is 1861081. The reversal of 1861074 is 4701681.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1671849 + 189225 = 1293^2 + 435^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51679 + ... + 51714.

2^1861074 is an apocalyptic number.

1861074 is an abundant number, since it is smaller than the sum of its proper divisors (2171292).

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

1861074 is a wasteful number, since it uses less digits than its factorization.

1861074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103401 (or 103398 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1861074 is about 1364.2118603795. The cubic root of 1861074 is about 123.0045606082.

The spelling of 1861074 in words is "one million, eight hundred sixty-one thousand, seventy-four".