1113750161 has 2 divisors, whose sum is σ = 1113750162. Its totient is φ = 1113750160.

The previous prime is 1113750103. The next prime is 1113750163. The reversal of 1113750161 is 1610573111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1070598400 + 43151761 = 32720^2 + 6569^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113750161 - 2⁶ = 1113750097 is a prime.

It is a super-2 number, since 2×1113750161² = 2480878842255051842, which contains 22 as substring.

Together with 1113750163, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1113750161.

It is not a weakly prime, because it can be changed into another prime (1113750163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556875080 + 556875081.

It is an arithmetic number, because the mean of its divisors is an integer number (556875081).

Almost surely, 2^1113750161 is an apocalyptic number.

It is an amenable number.

1113750161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113750161 is an equidigital number, since it uses as much as digits as its factorization.

1113750161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 1113750161 is about 33372.8956040677. The cubic root of 1113750161 is about 1036.5635344491.

The spelling of 1113750161 in words is "one billion, one hundred thirteen million, seven hundred fifty thousand, one hundred sixty-one".