1861054 has 16 divisors (see below), whose sum is σ = 3104640. Its totient is φ = 830880.

The previous prime is 1861039. The next prime is 1861061. The reversal of 1861054 is 4501681.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349 + ... + 1960.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^1861054 is an apocalyptic number.

1861054 is a deficient number, since it is larger than the sum of its proper divisors (1243586).

1861054 is a wasteful number, since it uses less digits than its factorization.

1861054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1861054 is about 1364.2045301200. The cubic root of 1861054 is about 123.0041199845.

The spelling of 1861054 in words is "one million, eight hundred sixty-one thousand, fifty-four".