1323173826 has 64 divisors (see below), whose sum is σ = 3181933440. Its totient is φ = 405155520.

The previous prime is 1323173791. The next prime is 1323173833. The reversal of 1323173826 is 6283713231.

It is a super-2 number, since 2×1323173826² = 3501577947622956552, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143656 + ... + 152588.

It is an arithmetic number, because the mean of its divisors is an integer number (49717710).

Almost surely, 2^1323173826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323173826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1590966720).

1323173826 is an abundant number, since it is smaller than the sum of its proper divisors (1858759614).

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

1323173826 is a wasteful number, since it uses less digits than its factorization.

1323173826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9168 (or 9162 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 1323173826 is about 36375.4563682712. The cubic root of 1323173826 is about 1097.8397896976.

The spelling of 1323173826 in words is "one billion, three hundred twenty-three million, one hundred seventy-three thousand, eight hundred twenty-six".