3813773807615 has 32 divisors (see below), whose sum is σ = 4792893106176. Its totient is φ = 2907750193920.

The previous prime is 3813773807611. The next prime is 3813773807639. The reversal of 3813773807615 is 5167083773183.

It is a happy number.

It is not a de Polignac number, because 3813773807615 - 2² = 3813773807611 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813773807611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85321802 + ... + 85366488.

It is an arithmetic number, because the mean of its divisors is an integer number (149777909568).

Almost surely, 2^{3813773807615} is an apocalyptic number.

3813773807615 is a deficient number, since it is larger than the sum of its proper divisors (979119298561).

3813773807615 is a wasteful number, since it uses less digits than its factorization.

3813773807615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47399.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 3813773807615 in words is "three trillion, eight hundred thirteen billion, seven hundred seventy-three million, eight hundred seven thousand, six hundred fifteen".