1097731080 has 288 divisors, whose sum is σ = 3903681600. Its totient is φ = 266768640.

The previous prime is 1097731069. The next prime is 1097731091. The reversal of 1097731080 is 801377901.

It is an interprime number because it is at equal distance from previous prime (1097731069) and next prime (1097731091).

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

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, 6573157 + ... + 6573323.

It is an arithmetic number, because the mean of its divisors is an integer number (13554450).

Almost surely, 2^1097731080 is an apocalyptic number.

1097731080 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 1097731080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1951840800).

1097731080 is an abundant number, since it is smaller than the sum of its proper divisors (2805950520).

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

1097731080 is a wasteful number, since it uses less digits than its factorization.

1097731080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 227 counting only the distinct ones).

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

The square root of 1097731080 is about 33132.0249909359. The cubic root of 1097731080 is about 1031.5698811522.

The spelling of 1097731080 in words is "one billion, ninety-seven million, seven hundred thirty-one thousand, eighty".