1856197056 has 224 divisors, whose sum is σ = 5825175040. Its totient is φ = 510603264.

The previous prime is 1856197009. The next prime is 1856197067. The reversal of 1856197056 is 6507916581.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1856196996 and 1856197014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8105550 + ... + 8105778.

Almost surely, 2^1856197056 is an apocalyptic number.

1856197056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1856197056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2912587520).

1856197056 is an abundant number, since it is smaller than the sum of its proper divisors (3968977984).

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

1856197056 is a wasteful number, since it uses less digits than its factorization.

1856197056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 1856197056 is about 43083.6054201595. The cubic root of 1856197056 is about 1228.9702214410.

The spelling of 1856197056 in words is "one billion, eight hundred fifty-six million, one hundred ninety-seven thousand, fifty-six".