1280165160 has 32 divisors (see below), whose sum is σ = 3840495840. Its totient is φ = 341377344.

The previous prime is 1280165153. The next prime is 1280165171. The reversal of 1280165160 is 615610821.

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5333902 + ... + 5334141.

It is an arithmetic number, because the mean of its divisors is an integer number (120015495).

Almost surely, 2^1280165160 is an apocalyptic number.

1280165160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280165160 is an abundant number, since it is smaller than the sum of its proper divisors (2560330680).

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

1280165160 is a wasteful number, since it uses less digits than its factorization.

1280165160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10668057 (or 10668053 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1280165160 is about 35779.3957467143. The cubic root of 1280165160 is about 1085.8137439226.

Adding to 1280165160 its reverse (615610821), we get a palindrome (1895775981).

The spelling of 1280165160 in words is "one billion, two hundred eighty million, one hundred sixty-five thousand, one hundred sixty".