1193824981 has 2 divisors, whose sum is σ = 1193824982. Its totient is φ = 1193824980.

The previous prime is 1193824969. The next prime is 1193825021. The reversal of 1193824981 is 1894283911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653262481 + 540562500 = 25559^2 + 23250^2 .

It is a cyclic number.

It is not a de Polignac number, because 1193824981 - 2²⁷ = 1059607253 is a prime.

It is a super-2 number, since 2×1193824981² = 2850436170519300722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1193824481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 596912490 + 596912491.

It is an arithmetic number, because the mean of its divisors is an integer number (596912491).

Almost surely, 2^1193824981 is an apocalyptic number.

It is an amenable number.

1193824981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1193824981 is an equidigital number, since it uses as much as digits as its factorization.

1193824981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 46.

The square root of 1193824981 is about 34551.7724726243. The cubic root of 1193824981 is about 1060.8326734263.

The spelling of 1193824981 in words is "one billion, one hundred ninety-three million, eight hundred twenty-four thousand, nine hundred eighty-one".