1920209716 has 12 divisors (see below), whose sum is σ = 3423770532. Its totient is φ = 941989568.

The previous prime is 1920209713. The next prime is 1920209723. The reversal of 1920209716 is 6179020291.

It can be written as a sum of positive squares in 2 ways, for example, as 1627799716 + 292410000 = 40346^2 + 17100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920209713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4528585 + ... + 4529008.

It is an arithmetic number, because the mean of its divisors is an integer number (285314211).

Almost surely, 2^1920209716 is an apocalyptic number.

It is an amenable number.

1920209716 is a deficient number, since it is larger than the sum of its proper divisors (1503560816).

1920209716 is a wasteful number, since it uses less digits than its factorization.

1920209716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9057650 (or 9057648 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1920209716 is about 43820.1975805678. The cubic root of 1920209716 is about 1242.9382532599.

The spelling of 1920209716 in words is "one billion, nine hundred twenty million, two hundred nine thousand, seven hundred sixteen".