1065181320 has 128 divisors (see below), whose sum is σ = 4057862400. Its totient is φ = 243468288.

The previous prime is 1065181319. The next prime is 1065181349. The reversal of 1065181320 is 231815601.

1065181320 is a `hidden beast` number, since 1 + 0 + 651 + 8 + 1 + 3 + 2 + 0 = 666.

It is a super-2 number, since 2×1065181320² = 2269222488953884800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62889 + ... + 78008.

It is an arithmetic number, because the mean of its divisors is an integer number (31702050).

Almost surely, 2^1065181320 is an apocalyptic number.

1065181320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1065181320 is an abundant number, since it is smaller than the sum of its proper divisors (2992681080).

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

1065181320 is a wasteful number, since it uses less digits than its factorization.

1065181320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140924 (or 140914 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1065181320 is about 32637.1156813834. The cubic root of 1065181320 is about 1021.2714248974.

Adding to 1065181320 its reverse (231815601), we get a palindrome (1296996921).

The spelling of 1065181320 in words is "one billion, sixty-five million, one hundred eighty-one thousand, three hundred twenty".