3804728158691 has 2 divisors, whose sum is σ = 3804728158692. Its totient is φ = 3804728158690.

The previous prime is 3804728158687. The next prime is 3804728158727. The reversal of 3804728158691 is 1968518274083.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3804728158691 - 2² = 3804728158687 is a prime.

It is not a weakly prime, because it can be changed into another prime (3804728118691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902364079345 + 1902364079346.

It is an arithmetic number, because the mean of its divisors is an integer number (1902364079346).

It is a 2-persistent number, because it is pandigital, and so is 2⋅3804728158691 = 7609456317382, but 3⋅3804728158691 = 11414184476073 is not.

Almost surely, 2^{3804728158691} is an apocalyptic number.

3804728158691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3804728158691 is an equidigital number, since it uses as much as digits as its factorization.

3804728158691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23224320, while the sum is 62.

The spelling of 3804728158691 in words is "three trillion, eight hundred four billion, seven hundred twenty-eight million, one hundred fifty-eight thousand, six hundred ninety-one".