1934221664 has 24 divisors (see below), whose sum is σ = 3809296008. Its totient is φ = 966781440.

The previous prime is 1934221661. The next prime is 1934221669. The reversal of 1934221664 is 4661224391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1934221661) 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, 104984 + ... + 122024.

It is an arithmetic number, because the mean of its divisors is an integer number (158720667).

Almost surely, 2^1934221664 is an apocalyptic number.

It is an amenable number.

1934221664 is a deficient number, since it is larger than the sum of its proper divisors (1875074344).

1934221664 is a wasteful number, since it uses less digits than its factorization.

1934221664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20598 (or 20590 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 1934221664 is about 43979.7869935724. The cubic root of 1934221664 is about 1245.9542076994.

The spelling of 1934221664 in words is "one billion, nine hundred thirty-four million, two hundred twenty-one thousand, six hundred sixty-four".