1928393970 has 32 divisors (see below), whose sum is σ = 4634083008. Its totient is φ = 513578688.

The previous prime is 1928393969. The next prime is 1928393981. The reversal of 1928393970 is 793938291.

It is a happy 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, 17229 + ... + 64448.

It is an arithmetic number, because the mean of its divisors is an integer number (144815094).

Almost surely, 2^1928393970 is an apocalyptic number.

1928393970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1928393970 is an abundant number, since it is smaller than the sum of its proper divisors (2705689038).

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

1928393970 is a wasteful number, since it uses less digits than its factorization.

1928393970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82474.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 1928393970 is about 43913.4827814875. The cubic root of 1928393970 is about 1244.7016204036.

The spelling of 1928393970 in words is "one billion, nine hundred twenty-eight million, three hundred ninety-three thousand, nine hundred seventy".