1861235056 has 20 divisors (see below), whose sum is σ = 3621897400. Its totient is φ = 926551872.

The previous prime is 1861235053. The next prime is 1861235069. The reversal of 1861235056 is 6505321681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861235053) 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, 250326 + ... + 257653.

It is an arithmetic number, because the mean of its divisors is an integer number (181094870).

Almost surely, 2^1861235056 is an apocalyptic number.

1861235056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1861235056 is a deficient number, since it is larger than the sum of its proper divisors (1760662344).

1861235056 is a wasteful number, since it uses less digits than its factorization.

1861235056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508216 (or 508210 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1861235056 is about 43142.0335172092. The cubic root of 1861235056 is about 1230.0810874781.

The spelling of 1861235056 in words is "one billion, eight hundred sixty-one million, two hundred thirty-five thousand, fifty-six".