1921927068 has 48 divisors (see below), whose sum is σ = 5022044160. Its totient is φ = 635593392.

The previous prime is 1921927043. The next prime is 1921927079. The reversal of 1921927068 is 8607291291.

1921927068 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1921927068² = 7387607309422153248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56346 + ... + 83777.

It is an arithmetic number, because the mean of its divisors is an integer number (104625920).

Almost surely, 2^1921927068 is an apocalyptic number.

1921927068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1921927068 is an abundant number, since it is smaller than the sum of its proper divisors (3100117092).

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

1921927068 is a wasteful number, since it uses less digits than its factorization.

1921927068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140263 (or 140255 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1921927068 is about 43839.7886400014. The cubic root of 1921927068 is about 1243.3086861420.

The spelling of 1921927068 in words is "one billion, nine hundred twenty-one million, nine hundred twenty-seven thousand, sixty-eight".