1196572921 has 2 divisors, whose sum is σ = 1196572922. Its totient is φ = 1196572920.

The previous prime is 1196572913. The next prime is 1196572943. The reversal of 1196572921 is 1292756911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 751362921 + 445210000 = 27411^2 + 21100^2 .

It is an emirp because it is prime and its reverse (1292756911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1196572921 - 2³ = 1196572913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1196572961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598286460 + 598286461.

It is an arithmetic number, because the mean of its divisors is an integer number (598286461).

Almost surely, 2^1196572921 is an apocalyptic number.

It is an amenable number.

1196572921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196572921 is an equidigital number, since it uses as much as digits as its factorization.

1196572921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 1196572921 is about 34591.5151590675. The cubic root of 1196572921 is about 1061.6459893873.

The spelling of 1196572921 in words is "one billion, one hundred ninety-six million, five hundred seventy-two thousand, nine hundred twenty-one".