1109997000 has 384 divisors, whose sum is σ = 4481568000. Its totient is φ = 253411200.

The previous prime is 1109996999. The next prime is 1109997001. The reversal of 1109997000 is 7999011.

It is an interprime number because it is at equal distance from previous prime (1109996999) and next prime (1109997001).

It is a super-3 number, since 3×1109997000³ (a number of 28 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1109997001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1322581 + ... + 1323419.

It is an arithmetic number, because the mean of its divisors is an integer number (11670750).

Almost surely, 2^1109997000 is an apocalyptic number.

1109997000 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 1109997000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2240784000).

1109997000 is an abundant number, since it is smaller than the sum of its proper divisors (3371571000).

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

1109997000 is a wasteful number, since it uses less digits than its factorization.

1109997000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 1109997000 is about 33316.6174753681. The cubic root of 1109997000 is about 1035.3978726558.

The spelling of 1109997000 in words is "one billion, one hundred nine million, nine hundred ninety-seven thousand".