3835971043209 has 6 divisors (see below), whose sum is σ = 5540847062426. Its totient is φ = 2557314028800.

The previous prime is 3835971043189. The next prime is 3835971043243. The reversal of 3835971043209 is 9023401795383.

3835971043209 is a `hidden beast` number, since 3 + 8 + 3 + 597 + 1 + 0 + 43 + 2 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2128432977225 + 1707538065984 = 1458915^2 + 1306728^2 .

It is not a de Polignac number, because 3835971043209 - 2²⁴ = 3835954265993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3835971043249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213109502392 + ... + 213109502409.

Almost surely, 2^{3835971043209} is an apocalyptic number.

It is an amenable number.

3835971043209 is a deficient number, since it is larger than the sum of its proper divisors (1704876019217).

3835971043209 is a wasteful number, since it uses less digits than its factorization.

3835971043209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426219004807 (or 426219004804 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 3835971043209 in words is "three trillion, eight hundred thirty-five billion, nine hundred seventy-one million, forty-three thousand, two hundred nine".