1166251523 has 2 divisors, whose sum is σ = 1166251524. Its totient is φ = 1166251522.

The previous prime is 1166251517. The next prime is 1166251531. The reversal of 1166251523 is 3251526611.

It is a weak prime.

It is an emirp because it is prime and its reverse (3251526611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166251523 - 2¹² = 1166247427 is a prime.

It is a super-2 number, since 2×1166251523² = 2720285229799639058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1166251523.

It is not a weakly prime, because it can be changed into another prime (1166251543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583125761 + 583125762.

It is an arithmetic number, because the mean of its divisors is an integer number (583125762).

Almost surely, 2^1166251523 is an apocalyptic number.

1166251523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166251523 is an equidigital number, since it uses as much as digits as its factorization.

1166251523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 1166251523 is about 34150.4249314705. The cubic root of 1166251523 is about 1052.6017182870.

The spelling of 1166251523 in words is "one billion, one hundred sixty-six million, two hundred fifty-one thousand, five hundred twenty-three".