1268980506 has 32 divisors (see below), whose sum is σ = 2854780800. Its totient is φ = 422992044.

The previous prime is 1268980483. The next prime is 1268980511. The reversal of 1268980506 is 6050898621.

1268980506 is a `hidden beast` number, since 1 + 2 + 68 + 9 + 80 + 506 = 666.

It is a super-2 number, since 2×1268980506² = 3220623049216032072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140686 + ... + 149433.

It is an arithmetic number, because the mean of its divisors is an integer number (89211900).

Almost surely, 2^1268980506 is an apocalyptic number.

1268980506 is an abundant number, since it is smaller than the sum of its proper divisors (1585800294).

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

1268980506 is an frugal number, since it uses more digits than its factorization.

1268980506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290142 (or 290124 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1268980506 is about 35622.7526449038. The cubic root of 1268980506 is about 1082.6422802421.

The spelling of 1268980506 in words is "one billion, two hundred sixty-eight million, nine hundred eighty thousand, five hundred six".