1097904340 has 48 divisors (see below), whose sum is σ = 2507596560. Its totient is φ = 401356800.

The previous prime is 1097904331. The next prime is 1097904377. The reversal of 1097904340 is 434097901.

It can be written as a sum of positive squares in 8 ways, for example, as 6130576 + 1091773764 = 2476^2 + 33042^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1097904340.

It is a congruent number.

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, 5356 + ... + 47164.

It is an arithmetic number, because the mean of its divisors is an integer number (52241595).

Almost surely, 2^1097904340 is an apocalyptic number.

1097904340 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 1097904340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1253798280).

1097904340 is an abundant number, since it is smaller than the sum of its proper divisors (1409692220).

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

1097904340 is a wasteful number, since it uses less digits than its factorization.

1097904340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41932 (or 41930 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1097904340 is about 33134.6395785438. The cubic root of 1097904340 is about 1031.6241507872.

The spelling of 1097904340 in words is "one billion, ninety-seven million, nine hundred four thousand, three hundred forty".