3815831206842 has 32 divisors (see below), whose sum is σ = 8093896192512. Its totient is φ = 1195151299584.

The previous prime is 3815831206813. The next prime is 3815831206861. The reversal of 3815831206842 is 2486021385183.

It is a super-2 number, since 2×3815831206842² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30753663 + ... + 30877490.

It is an arithmetic number, because the mean of its divisors is an integer number (252934256016).

Almost surely, 2^{3815831206842} is an apocalyptic number.

3815831206842 is an abundant number, since it is smaller than the sum of its proper divisors (4278064985670).

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

3815831206842 is a wasteful number, since it uses less digits than its factorization.

3815831206842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61631782.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 3815831206842 in words is "three trillion, eight hundred fifteen billion, eight hundred thirty-one million, two hundred six thousand, eight hundred forty-two".