1109370780 has 216 divisors, whose sum is σ = 3970420272. Its totient is φ = 249951744.

The previous prime is 1109370767. The next prime is 1109370793. The reversal of 1109370780 is 870739011.

1109370780 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1109370767) and next prime (1109370793).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 642999 + ... + 644721.

Almost surely, 2^1109370780 is an apocalyptic number.

1109370780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1109370780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1985210136).

1109370780 is an abundant number, since it is smaller than the sum of its proper divisors (2861049492).

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

1109370780 is a wasteful number, since it uses less digits than its factorization.

1109370780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 1109370780 is about 33307.2181366142. The cubic root of 1109370780 is about 1035.2031247343.

The spelling of 1109370780 in words is "one billion, one hundred nine million, three hundred seventy thousand, seven hundred eighty".