1355632169 has 2 divisors, whose sum is σ = 1355632170. Its totient is φ = 1355632168.

The previous prime is 1355632153. The next prime is 1355632171. The reversal of 1355632169 is 9612365531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1354608025 + 1024144 = 36805^2 + 1012^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355632169 - 2⁴ = 1355632153 is a prime.

It is a super-2 number, since 2×1355632169² = 3675477155255289122, which contains 22 as substring.

Together with 1355632171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1355632189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677816084 + 677816085.

It is an arithmetic number, because the mean of its divisors is an integer number (677816085).

Almost surely, 2^1355632169 is an apocalyptic number.

It is an amenable number.

1355632169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355632169 is an equidigital number, since it uses as much as digits as its factorization.

1355632169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 41.

The square root of 1355632169 is about 36818.9104808928. The cubic root of 1355632169 is about 1106.7442866135.

The spelling of 1355632169 in words is "one billion, three hundred fifty-five million, six hundred thirty-two thousand, one hundred sixty-nine".