381289748826 has 16 divisors (see below), whose sum is σ = 871519425984. Its totient is φ = 108939928224.

The previous prime is 381289748813. The next prime is 381289748897. The reversal of 381289748826 is 628847982183.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4539163635 + ... + 4539163718.

It is an arithmetic number, because the mean of its divisors is an integer number (54469964124).

Almost surely, 2^381289748826 is an apocalyptic number.

381289748826 is an abundant number, since it is smaller than the sum of its proper divisors (490229677158).

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

381289748826 is a wasteful number, since it uses less digits than its factorization.

381289748826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078327365.

The product of its digits is 74317824, while the sum is 66.

The spelling of 381289748826 in words is "three hundred eighty-one billion, two hundred eighty-nine million, seven hundred forty-eight thousand, eight hundred twenty-six".