1928019434 has 16 divisors (see below), whose sum is σ = 3171294720. Its totient is φ = 871829760.

The previous prime is 1928019409. The next prime is 1928019449. The reversal of 1928019434 is 4349108291.

It is a junction number, because it is equal to n+sod(n) for n = 1928019391 and 1928019400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222794 + ... + 231285.

It is an arithmetic number, because the mean of its divisors is an integer number (198205920).

Almost surely, 2^1928019434 is an apocalyptic number.

1928019434 is a deficient number, since it is larger than the sum of its proper divisors (1243275286).

1928019434 is a wasteful number, since it uses less digits than its factorization.

1928019434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454285.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1928019434 is about 43909.2180982536. The cubic root of 1928019434 is about 1244.6210324881.

The spelling of 1928019434 in words is "one billion, nine hundred twenty-eight million, nineteen thousand, four hundred thirty-four".