1266878450 has 24 divisors (see below), whose sum is σ = 2358009792. Its totient is φ = 506403920.

The previous prime is 1266878429. The next prime is 1266878507. The reversal of 1266878450 is 548786621.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1266878395 and 1266878404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72467 + ... + 88233.

It is an arithmetic number, because the mean of its divisors is an integer number (98250408).

Almost surely, 2^1266878450 is an apocalyptic number.

1266878450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266878450 is a deficient number, since it is larger than the sum of its proper divisors (1091131342).

1266878450 is a wasteful number, since it uses less digits than its factorization.

1266878450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17386 (or 17381 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 1266878450 is about 35593.2360147262. The cubic root of 1266878450 is about 1082.0441537805.

The spelling of 1266878450 in words is "one billion, two hundred sixty-six million, eight hundred seventy-eight thousand, four hundred fifty".