1097469840 has 80 divisors (see below), whose sum is σ = 3550094208. Its totient is φ = 279932928.

The previous prime is 1097469829. The next prime is 1097469847. The reversal of 1097469840 is 489647901.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1097469840.

It is not an unprimeable number, because it can be changed into a prime (1097469847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93889 + ... + 104928.

Almost surely, 2^1097469840 is an apocalyptic number.

1097469840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1097469840 is an abundant number, since it is smaller than the sum of its proper divisors (2452624368).

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

1097469840 is a wasteful number, since it uses less digits than its factorization.

1097469840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198856 (or 198850 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 1097469840 is about 33128.0823471568. The cubic root of 1097469840 is about 1031.4880430465.

The spelling of 1097469840 in words is "one billion, ninety-seven million, four hundred sixty-nine thousand, eight hundred forty".