363826581820 has 48 divisors (see below), whose sum is σ = 845045879328. Its totient is φ = 130705263360.

The previous prime is 363826581779. The next prime is 363826581827. The reversal of 363826581820 is 28185628363.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (363826581827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18900286 + ... + 18919525.

It is an arithmetic number, because the mean of its divisors is an integer number (17605122486).

Almost surely, 2^363826581820 is an apocalyptic number.

It is an amenable number.

363826581820 is an abundant number, since it is smaller than the sum of its proper divisors (481219297508).

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

363826581820 is a wasteful number, since it uses less digits than its factorization.

363826581820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37819870 (or 37819868 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 363826581820 in words is "three hundred sixty-three billion, eight hundred twenty-six million, five hundred eighty-one thousand, eight hundred twenty".