1091247119 has 24 divisors (see below), whose sum is σ = 1208083968. Its totient is φ = 982195200.

The previous prime is 1091247109. The next prime is 1091247133. The reversal of 1091247119 is 9117421901.

It is not a de Polignac number, because 1091247119 - 2¹⁶ = 1091181583 is a prime.

It is a super-2 number, since 2×1091247119² = 2381640549451600322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091247109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1815419 + ... + 1816019.

It is an arithmetic number, because the mean of its divisors is an integer number (50336832).

Almost surely, 2^1091247119 is an apocalyptic number.

1091247119 is a deficient number, since it is larger than the sum of its proper divisors (116836849).

1091247119 is a wasteful number, since it uses less digits than its factorization.

1091247119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1091247119 is about 33034.0297117987. The cubic root of 1091247119 is about 1029.5348133437.

The spelling of 1091247119 in words is "one billion, ninety-one million, two hundred forty-seven thousand, one hundred nineteen".