1260178791 has 8 divisors (see below), whose sum is σ = 1700482560. Its totient is φ = 829997112.

The previous prime is 1260178753. The next prime is 1260178793. The reversal of 1260178791 is 1978710621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1260178791 - 2⁷ = 1260178663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260178793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530231 + ... + 2530728.

It is an arithmetic number, because the mean of its divisors is an integer number (212560320).

Almost surely, 2^1260178791 is an apocalyptic number.

1260178791 is a deficient number, since it is larger than the sum of its proper divisors (440303769).

1260178791 is an equidigital number, since it uses as much as digits as its factorization.

1260178791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061045.

The product of its (nonzero) digits is 42336, while the sum is 42.

The square root of 1260178791 is about 35498.9970421701. The cubic root of 1260178791 is about 1080.1333828746.

The spelling of 1260178791 in words is "one billion, two hundred sixty million, one hundred seventy-eight thousand, seven hundred ninety-one".