1280168888 has 8 divisors (see below), whose sum is σ = 2400316680. Its totient is φ = 640084440.

The previous prime is 1280168863. The next prime is 1280168899. The reversal of 1280168888 is 8888610821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80010548 + ... + 80010563.

It is an arithmetic number, because the mean of its divisors is an integer number (300039585).

Almost surely, 2^1280168888 is an apocalyptic number.

It is an amenable number.

1280168888 is a deficient number, since it is larger than the sum of its proper divisors (1120147792).

1280168888 is a wasteful number, since it uses less digits than its factorization.

1280168888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160021117 (or 160021113 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 50.

The square root of 1280168888 is about 35779.4478436993. The cubic root of 1280168888 is about 1085.8147979298.

The spelling of 1280168888 in words is "one billion, two hundred eighty million, one hundred sixty-eight thousand, eight hundred eighty-eight".