1197541511 has 2 divisors, whose sum is σ = 1197541512. Its totient is φ = 1197541510.

The previous prime is 1197541493. The next prime is 1197541549. The reversal of 1197541511 is 1151457911.

It is a weak prime.

It is an emirp because it is prime and its reverse (1151457911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1197541511 - 2²⁶ = 1130432647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197541561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598770755 + 598770756.

It is an arithmetic number, because the mean of its divisors is an integer number (598770756).

Almost surely, 2^1197541511 is an apocalyptic number.

1197541511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197541511 is an equidigital number, since it uses as much as digits as its factorization.

1197541511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 35.

The square root of 1197541511 is about 34605.5127255760. The cubic root of 1197541511 is about 1061.9323690238.

The spelling of 1197541511 in words is "one billion, one hundred ninety-seven million, five hundred forty-one thousand, five hundred eleven".