1280162160 has 60 divisors (see below), whose sum is σ = 4299213672. Its totient is φ = 341376384.

The previous prime is 1280162131. The next prime is 1280162161. The reversal of 1280162160 is 612610821.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280162161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 888282 + ... + 889721.

Almost surely, 2^1280162160 is an apocalyptic number.

1280162160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280162160 is an abundant number, since it is smaller than the sum of its proper divisors (3019051512).

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

1280162160 is a wasteful number, since it uses less digits than its factorization.

1280162160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778022 (or 1778013 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1280162160 is about 35779.3538231198. The cubic root of 1280162160 is about 1085.8128957394.

Adding to 1280162160 its reverse (612610821), we get a palindrome (1892772981).

The spelling of 1280162160 in words is "one billion, two hundred eighty million, one hundred sixty-two thousand, one hundred sixty".