1261466001 has 8 divisors (see below), whose sum is σ = 1868838560. Its totient is φ = 840977316.

The previous prime is 1261465999. The next prime is 1261466023. The reversal of 1261466001 is 1006641621.

1261466001 is a `hidden beast` number, since 12 + 6 + 1 + 46 + 600 + 1 = 666.

It is not a de Polignac number, because 1261466001 - 2¹ = 1261465999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 46720963 = 1261466001 / (1 + 2 + 6 + 1 + 4 + 6 + 6 + 0 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1261466051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23360455 + ... + 23360508.

It is an arithmetic number, because the mean of its divisors is an integer number (233604820).

Almost surely, 2^1261466001 is an apocalyptic number.

It is an amenable number.

1261466001 is a deficient number, since it is larger than the sum of its proper divisors (607372559).

1261466001 is an equidigital number, since it uses as much as digits as its factorization.

1261466001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46720972 (or 46720966 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1261466001 is about 35517.1226452820. The cubic root of 1261466001 is about 1080.5010252483.

The spelling of 1261466001 in words is "one billion, two hundred sixty-one million, four hundred sixty-six thousand, one".