1181321622 has 96 divisors (see below), whose sum is σ = 2821728000. Its totient is φ = 354974400.

The previous prime is 1181321621. The next prime is 1181321629. The reversal of 1181321622 is 2261231811.

1181321622 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 32 + 1 + 622 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181321621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2367129 + ... + 2367627.

It is an arithmetic number, because the mean of its divisors is an integer number (29393000).

Almost surely, 2^1181321622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1181321622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410864000).

1181321622 is an abundant number, since it is smaller than the sum of its proper divisors (1640406378).

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

1181321622 is a wasteful number, since it uses less digits than its factorization.

1181321622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 735 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1181321622 is about 34370.3596431576. The cubic root of 1181321622 is about 1057.1161741030.

The spelling of 1181321622 in words is "one billion, one hundred eighty-one million, three hundred twenty-one thousand, six hundred twenty-two".