1946873664 has 56 divisors (see below), whose sum is σ = 5723453120. Its totient is φ = 648957312.

The previous prime is 1946873651. The next prime is 1946873699. The reversal of 1946873664 is 4663786491.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1946873664.

It is a congruent number.

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, 561604 + ... + 565059.

It is an arithmetic number, because the mean of its divisors is an integer number (102204520).

Almost surely, 2^1946873664 is an apocalyptic number.

It is an amenable number.

1946873664 is an abundant number, since it is smaller than the sum of its proper divisors (3776579456).

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

1946873664 is a wasteful number, since it uses less digits than its factorization.

1946873664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126684 (or 1126668 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 1946873664 is about 44123.3913474474. The cubic root of 1946873664 is about 1248.6649562876.

The spelling of 1946873664 in words is "one billion, nine hundred forty-six million, eight hundred seventy-three thousand, six hundred sixty-four".