1855946064 has 80 divisors (see below), whose sum is σ = 5485363200. Its totient is φ = 529699200.

The previous prime is 1855946047. The next prime is 1855946069. The reversal of 1855946064 is 4606495581.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855946069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384337 + ... + 389135.

It is an arithmetic number, because the mean of its divisors is an integer number (68567040).

Almost surely, 2^1855946064 is an apocalyptic number.

1855946064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1855946064 is an abundant number, since it is smaller than the sum of its proper divisors (3629417136).

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

1855946064 is a wasteful number, since it uses less digits than its factorization.

1855946064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968 (or 5962 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 1855946064 is about 43080.6924735432. The cubic root of 1855946064 is about 1228.9148258142.

The spelling of 1855946064 in words is "one billion, eight hundred fifty-five million, nine hundred forty-six thousand, sixty-four".