1121542193 has 2 divisors, whose sum is σ = 1121542194. Its totient is φ = 1121542192.

The previous prime is 1121542189. The next prime is 1121542229. The reversal of 1121542193 is 3912451211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1119036304 + 2505889 = 33452^2 + 1583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121542193 - 2² = 1121542189 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121542693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560771096 + 560771097.

It is an arithmetic number, because the mean of its divisors is an integer number (560771097).

Almost surely, 2^1121542193 is an apocalyptic number.

It is an amenable number.

1121542193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121542193 is an equidigital number, since it uses as much as digits as its factorization.

1121542193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 1121542193 is about 33489.4340501598. The cubic root of 1121542193 is about 1038.9752581907.

The spelling of 1121542193 in words is "one billion, one hundred twenty-one million, five hundred forty-two thousand, one hundred ninety-three".