1163065440 has 96 divisors (see below), whose sum is σ = 3781886976. Its totient is φ = 300142080.

The previous prime is 1163065433. The next prime is 1163065441. The reversal of 1163065440 is 445603611.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1163065398 and 1163065407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163065441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24202 + ... + 53961.

It is an arithmetic number, because the mean of its divisors is an integer number (39394656).

Almost surely, 2^1163065440 is an apocalyptic number.

1163065440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163065440 is an abundant number, since it is smaller than the sum of its proper divisors (2618821536).

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

1163065440 is a wasteful number, since it uses less digits than its factorization.

1163065440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78212 (or 78204 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1163065440 is about 34103.7452488726. The cubic root of 1163065440 is about 1051.6423097353.

The spelling of 1163065440 in words is "one billion, one hundred sixty-three million, sixty-five thousand, four hundred forty".