1856148701628 has 144 divisors (see below), whose sum is σ = 4726174279680. Its totient is φ = 566704749312.

The previous prime is 1856148701611. The next prime is 1856148701633. The reversal of 1856148701628 is 8261078416581.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205571818 + ... + 205580846.

It is an arithmetic number, because the mean of its divisors is an integer number (32820654720).

Almost surely, 2^{1856148701628} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1856148701628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363087139840).

1856148701628 is an abundant number, since it is smaller than the sum of its proper divisors (2870025578052).

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

1856148701628 is a wasteful number, since it uses less digits than its factorization.

1856148701628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9836 (or 9821 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 57.

The spelling of 1856148701628 in words is "one trillion, eight hundred fifty-six billion, one hundred forty-eight million, seven hundred one thousand, six hundred twenty-eight".