1193528381 has 2 divisors, whose sum is σ = 1193528382. Its totient is φ = 1193528380.

The previous prime is 1193528353. The next prime is 1193528393. The reversal of 1193528381 is 1838253911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1192597156 + 931225 = 34534^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1193528381 - 2⁶ = 1193528317 is a prime.

It is a super-2 number, since 2×1193528381² = 2849019992504962322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1193528981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 596764190 + 596764191.

It is an arithmetic number, because the mean of its divisors is an integer number (596764191).

Almost surely, 2^1193528381 is an apocalyptic number.

It is an amenable number.

1193528381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1193528381 is an equidigital number, since it uses as much as digits as its factorization.

1193528381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 41.

The square root of 1193528381 is about 34547.4800962386. The cubic root of 1193528381 is about 1060.7448132467.

The spelling of 1193528381 in words is "one billion, one hundred ninety-three million, five hundred twenty-eight thousand, three hundred eighty-one".