1097345840 has 20 divisors (see below), whose sum is σ = 2551329264. Its totient is φ = 438938304.

The previous prime is 1097345831. The next prime is 1097345849. The reversal of 1097345840 is 485437901.

It is an interprime number because it is at equal distance from previous prime (1097345831) and next prime (1097345849).

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1097345849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6858332 + ... + 6858491.

Almost surely, 2^1097345840 is an apocalyptic number.

1097345840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1097345840 is an abundant number, since it is smaller than the sum of its proper divisors (1453983424).

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

1097345840 is a wasteful number, since it uses less digits than its factorization.

1097345840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13716836 (or 13716830 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1097345840 is about 33126.2107703251. The cubic root of 1097345840 is about 1031.4491932819.

The spelling of 1097345840 in words is "one billion, ninety-seven million, three hundred forty-five thousand, eight hundred forty".