1109124390 has 32 divisors (see below), whose sum is σ = 2903890176. Its totient is φ = 268878560.

The previous prime is 1109124349. The next prime is 1109124403. The reversal of 1109124390 is 934219011.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680162 + ... + 1680821.

It is an arithmetic number, because the mean of its divisors is an integer number (90746568).

Almost surely, 2^1109124390 is an apocalyptic number.

1109124390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1109124390 is an abundant number, since it is smaller than the sum of its proper divisors (1794765786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1109124390 is a wasteful number, since it uses less digits than its factorization.

1109124390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361004.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1109124390 is about 33303.5191834136. The cubic root of 1109124390 is about 1035.1264799106.

The spelling of 1109124390 in words is "one billion, one hundred nine million, one hundred twenty-four thousand, three hundred ninety".