1928421426 has 32 divisors (see below), whose sum is σ = 4026045888. Its totient is φ = 615176640.

The previous prime is 1928421413. The next prime is 1928421461. The reversal of 1928421426 is 6241248291.

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, 57660 + ... + 84743.

It is an arithmetic number, because the mean of its divisors is an integer number (125813934).

Almost surely, 2^1928421426 is an apocalyptic number.

1928421426 is an abundant number, since it is smaller than the sum of its proper divisors (2097624462).

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

1928421426 is a wasteful number, since it uses less digits than its factorization.

1928421426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142506.

The product of its digits is 55296, while the sum is 39.

The square root of 1928421426 is about 43913.7953950692. The cubic root of 1928421426 is about 1244.7075276276.

The spelling of 1928421426 in words is "one billion, nine hundred twenty-eight million, four hundred twenty-one thousand, four hundred twenty-six".