1145847680 has 64 divisors (see below), whose sum is σ = 2746472400. Its totient is φ = 457138176.

The previous prime is 1145847667. The next prime is 1145847691. The reversal of 1145847680 is 867485411.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1145847680² = 2625933811522764800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266024 + ... + 270296.

Almost surely, 2^1145847680 is an apocalyptic number.

1145847680 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 1145847680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1373236200).

1145847680 is an abundant number, since it is smaller than the sum of its proper divisors (1600624720).

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

1145847680 is an equidigital number, since it uses as much as digits as its factorization.

1145847680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711 (or 4699 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 1145847680 is about 33850.3719329640. The cubic root of 1145847680 is about 1046.4270636761.

The spelling of 1145847680 in words is "one billion, one hundred forty-five million, eight hundred forty-seven thousand, six hundred eighty".