1111542791 has 2 divisors, whose sum is σ = 1111542792. Its totient is φ = 1111542790.

The previous prime is 1111542743. The next prime is 1111542811. The reversal of 1111542791 is 1972451111.

It is a strong prime.

It is an emirp because it is prime and its reverse (1972451111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111542791 - 2¹⁴ = 1111526407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111541791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555771395 + 555771396.

It is an arithmetic number, because the mean of its divisors is an integer number (555771396).

Almost surely, 2^1111542791 is an apocalyptic number.

1111542791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111542791 is an equidigital number, since it uses as much as digits as its factorization.

1111542791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 32.

The square root of 1111542791 is about 33339.8079028659. The cubic root of 1111542791 is about 1035.8782842626.

The spelling of 1111542791 in words is "one billion, one hundred eleven million, five hundred forty-two thousand, seven hundred ninety-one".