3809920540 has 12 divisors (see below), whose sum is σ = 8000833176. Its totient is φ = 1523968208.

The previous prime is 3809920523. The next prime is 3809920571. The reversal of 3809920540 is 450299083.

It is a happy number.

It is a super-2 number, since 2×3809920540² = 29030989042227783200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3809920493 and 3809920502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95247994 + ... + 95248033.

It is an arithmetic number, because the mean of its divisors is an integer number (666736098).

Almost surely, 2^3809920540 is an apocalyptic number.

It is an amenable number.

3809920540 is an abundant number, since it is smaller than the sum of its proper divisors (4190912636).

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

3809920540 is a wasteful number, since it uses less digits than its factorization.

3809920540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190496036 (or 190496034 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 3809920540 is about 61724.5537853454. The cubic root of 3809920540 is about 1561.8475453198.

The spelling of 3809920540 in words is "three billion, eight hundred nine million, nine hundred twenty thousand, five hundred forty".