1273168788 has 72 divisors (see below), whose sum is σ = 3129110880. Its totient is φ = 402427200.

The previous prime is 1273168769. The next prime is 1273168801. The reversal of 1273168788 is 8878613721.

It is a self number, because there is not a number n which added to its sum of digits gives 1273168788.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1210863 + ... + 1211913.

Almost surely, 2^1273168788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273168788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564555440).

1273168788 is an abundant number, since it is smaller than the sum of its proper divisors (1855942092).

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

1273168788 is a wasteful number, since it uses less digits than its factorization.

1273168788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1144 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The square root of 1273168788 is about 35681.4908320827. The cubic root of 1273168788 is about 1083.8320625538.

The spelling of 1273168788 in words is "one billion, two hundred seventy-three million, one hundred sixty-eight thousand, seven hundred eighty-eight".