1929768444 has 36 divisors (see below), whose sum is σ = 4898982816. Its totient is φ = 640492608.

The previous prime is 1929768409. The next prime is 1929768457. The reversal of 1929768444 is 4448679291.

1929768444 is a `hidden beast` number, since 192 + 9 + 7 + 6 + 8 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1929768444² = 7448012494916362272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 106644 + ... + 123419.

It is an arithmetic number, because the mean of its divisors is an integer number (136082856).

Almost surely, 2^1929768444 is an apocalyptic number.

It is an amenable number.

1929768444 is an abundant number, since it is smaller than the sum of its proper divisors (2969214372).

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

1929768444 is a wasteful number, since it uses less digits than its factorization.

1929768444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230306 (or 230301 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 1929768444 is about 43929.1297887859. The cubic root of 1929768444 is about 1244.9972729412.

The spelling of 1929768444 in words is "one billion, nine hundred twenty-nine million, seven hundred sixty-eight thousand, four hundred forty-four".