1097919760 has 80 divisors (see below), whose sum is σ = 2923920000. Its totient is φ = 375579648.

The previous prime is 1097919749. The next prime is 1097919773. The reversal of 1097919760 is 679197901.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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, 277476 + ... + 281404.

It is an arithmetic number, because the mean of its divisors is an integer number (36549000).

Almost surely, 2^1097919760 is an apocalyptic number.

1097919760 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 1097919760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1461960000).

1097919760 is an abundant number, since it is smaller than the sum of its proper divisors (1826000240).

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

1097919760 is a wasteful number, since it uses less digits than its factorization.

1097919760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 49.

The square root of 1097919760 is about 33134.8722647304. The cubic root of 1097919760 is about 1031.6289804642.

The spelling of 1097919760 in words is "one billion, ninety-seven million, nine hundred nineteen thousand, seven hundred sixty".