1920005386 has 16 divisors (see below), whose sum is σ = 3106855584. Its totient is φ = 884639664.

The previous prime is 1920005371. The next prime is 1920005419. The reversal of 1920005386 is 6835000291.

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, 47640 + ... + 78163.

It is an arithmetic number, because the mean of its divisors is an integer number (194178474).

Almost surely, 2^1920005386 is an apocalyptic number.

1920005386 is a deficient number, since it is larger than the sum of its proper divisors (1186850198).

1920005386 is a wasteful number, since it uses less digits than its factorization.

1920005386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126405.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1920005386 is about 43817.8660594055. The cubic root of 1920005386 is about 1242.8941645717.

The spelling of 1920005386 in words is "one billion, nine hundred twenty million, five thousand, three hundred eighty-six".