1261478967 has 8 divisors (see below), whose sum is σ = 1922253696. Its totient is φ = 720845112.

The previous prime is 1261478947. The next prime is 1261478987. The reversal of 1261478967 is 7698741621.

It is an interprime number because it is at equal distance from previous prime (1261478947) and next prime (1261478987).

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

It is not a de Polignac number, because 1261478967 - 2⁷ = 1261478839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261478947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30035193 + ... + 30035234.

It is an arithmetic number, because the mean of its divisors is an integer number (240281712).

Almost surely, 2^1261478967 is an apocalyptic number.

1261478967 is a deficient number, since it is larger than the sum of its proper divisors (660774729).

1261478967 is an equidigital number, since it uses as much as digits as its factorization.

1261478967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60070437.

The product of its digits is 1016064, while the sum is 51.

The square root of 1261478967 is about 35517.3051764911. The cubic root of 1261478967 is about 1080.5047272185.

The spelling of 1261478967 in words is "one billion, two hundred sixty-one million, four hundred seventy-eight thousand, nine hundred sixty-seven".