1197381533 has 2 divisors, whose sum is σ = 1197381534. Its totient is φ = 1197381532.

The previous prime is 1197381511. The next prime is 1197381583. The reversal of 1197381533 is 3351837911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1197367609 + 13924 = 34603^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197381533 - 2⁶ = 1197381469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197381583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598690766 + 598690767.

It is an arithmetic number, because the mean of its divisors is an integer number (598690767).

Almost surely, 2^1197381533 is an apocalyptic number.

It is an amenable number.

1197381533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197381533 is an equidigital number, since it uses as much as digits as its factorization.

1197381533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 1197381533 is about 34603.2011958431. The cubic root of 1197381533 is about 1061.8850795337.

The spelling of 1197381533 in words is "one billion, one hundred ninety-seven million, three hundred eighty-one thousand, five hundred thirty-three".