1921839272924 has 12 divisors (see below), whose sum is σ = 3479191787400. Its totient is φ = 927784476528.

The previous prime is 1921839272879. The next prime is 1921839272939. The reversal of 1921839272924 is 4292729381291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8283789854 + ... + 8283790085.

It is an arithmetic number, because the mean of its divisors is an integer number (289932648950).

Almost surely, 2^{1921839272924} is an apocalyptic number.

It is an amenable number.

1921839272924 is a deficient number, since it is larger than the sum of its proper divisors (1557352514476).

1921839272924 is a wasteful number, since it uses less digits than its factorization.

1921839272924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16567579972 (or 16567579970 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 59.

The spelling of 1921839272924 in words is "one trillion, nine hundred twenty-one billion, eight hundred thirty-nine million, two hundred seventy-two thousand, nine hundred twenty-four".