1197948569 has 2 divisors, whose sum is σ = 1197948570. Its totient is φ = 1197948568.

The previous prime is 1197948541. The next prime is 1197948589. The reversal of 1197948569 is 9658497911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188870400 + 9078169 = 34480^2 + 3013^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197948569 - 2²⁸ = 929513113 is a prime.

It is a super-2 number, since 2×1197948569² = 2870161547938295522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1197948509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598974284 + 598974285.

It is an arithmetic number, because the mean of its divisors is an integer number (598974285).

Almost surely, 2^1197948569 is an apocalyptic number.

It is an amenable number.

1197948569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197948569 is an equidigital number, since it uses as much as digits as its factorization.

1197948569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 59.

The square root of 1197948569 is about 34611.3936298439. The cubic root of 1197948569 is about 1062.0526763628.

The spelling of 1197948569 in words is "one billion, one hundred ninety-seven million, nine hundred forty-eight thousand, five hundred sixty-nine".