1097934840 has 96 divisors (see below), whose sum is σ = 3582474480. Its totient is φ = 291618816.

The previous prime is 1097934839. The next prime is 1097934857. The reversal of 1097934840 is 484397901.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86587 + ... + 98453.

Almost surely, 2^1097934840 is an apocalyptic number.

1097934840 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 1097934840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791237240).

1097934840 is an abundant number, since it is smaller than the sum of its proper divisors (2484539640).

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

1097934840 is a wasteful number, since it uses less digits than its factorization.

1097934840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12141 (or 12134 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1097934840 is about 33135.0998187722. The cubic root of 1097934840 is about 1031.6337036065.

The spelling of 1097934840 in words is "one billion, ninety-seven million, nine hundred thirty-four thousand, eight hundred forty".