1861094442 has 16 divisors (see below), whose sum is σ = 3756976992. Its totient is φ = 614566800.

The previous prime is 1861094437. The next prime is 1861094461. The reversal of 1861094442 is 2444901681.

It is a self number, because there is not a number n which added to its sum of digits gives 1861094442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448809 + ... + 1450092.

It is an arithmetic number, because the mean of its divisors is an integer number (234811062).

Almost surely, 2^1861094442 is an apocalyptic number.

1861094442 is an abundant number, since it is smaller than the sum of its proper divisors (1895882550).

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

1861094442 is a wasteful number, since it uses less digits than its factorization.

1861094442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899013.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1861094442 is about 43140.4038228666. The cubic root of 1861094442 is about 1230.0501096645.

The spelling of 1861094442 in words is "one billion, eight hundred sixty-one million, ninety-four thousand, four hundred forty-two".