1109199124 has 12 divisors (see below), whose sum is σ = 2117562048. Its totient is φ = 504181400.

The previous prime is 1109199121. The next prime is 1109199131. The reversal of 1109199124 is 4219919011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109199121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12604492 + ... + 12604579.

It is an arithmetic number, because the mean of its divisors is an integer number (176463504).

Almost surely, 2^1109199124 is an apocalyptic number.

It is an amenable number.

1109199124 is a deficient number, since it is larger than the sum of its proper divisors (1008362924).

1109199124 is a wasteful number, since it uses less digits than its factorization.

1109199124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25209086 (or 25209084 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 1109199124 is about 33304.6411780701. The cubic root of 1109199124 is about 1035.1497287021.

It can be divided in two parts, 11091 and 99124, that added together give a triangular number (110215 = T₄₆₉).

The spelling of 1109199124 in words is "one billion, one hundred nine million, one hundred ninety-nine thousand, one hundred twenty-four".