1920078428 has 6 divisors (see below), whose sum is σ = 3360137256. Its totient is φ = 960039212.

The previous prime is 1920078409. The next prime is 1920078437. The reversal of 1920078428 is 8248700291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240009800 + ... + 240009807.

It is an arithmetic number, because the mean of its divisors is an integer number (560022876).

Almost surely, 2^1920078428 is an apocalyptic number.

It is an amenable number.

1920078428 is a deficient number, since it is larger than the sum of its proper divisors (1440058828).

1920078428 is a wasteful number, since it uses less digits than its factorization.

1920078428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480019611 (or 480019609 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 1920078428 is about 43818.6995242899. The cubic root of 1920078428 is about 1242.9099253477.

The spelling of 1920078428 in words is "one billion, nine hundred twenty million, seventy-eight thousand, four hundred twenty-eight".