1266950145 has 8 divisors (see below), whose sum is σ = 2027120256. Its totient is φ = 675706736.

The previous prime is 1266950141. The next prime is 1266950149. The reversal of 1266950145 is 5410596621.

It is an interprime number because it is at equal distance from previous prime (1266950141) and next prime (1266950149).

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

It is a cyclic number.

It is not a de Polignac number, because 1266950145 - 2² = 1266950141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266950141) 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, 42231657 + ... + 42231686.

It is an arithmetic number, because the mean of its divisors is an integer number (253390032).

Almost surely, 2^1266950145 is an apocalyptic number.

1266950145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1266950145 is a deficient number, since it is larger than the sum of its proper divisors (760170111).

1266950145 is an equidigital number, since it uses as much as digits as its factorization.

1266950145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84463351.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1266950145 is about 35594.2431440816. The cubic root of 1266950145 is about 1082.0645650237.

The spelling of 1266950145 in words is "one billion, two hundred sixty-six million, nine hundred fifty thousand, one hundred forty-five".