1466668261 has 4 divisors (see below), whose sum is σ = 1466937472. Its totient is φ = 1466399052.

The previous prime is 1466668241. The next prime is 1466668267. The reversal of 1466668261 is 1628666641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1628666641 = 7 ⋅232666663.

It is a cyclic number.

It is not a de Polignac number, because 1466668261 - 2¹⁵ = 1466635493 is a prime.

It is a super-2 number, since 2×1466668261² = 4302231575649528242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1466668267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126261 + ... + 137386.

It is an arithmetic number, because the mean of its divisors is an integer number (366734368).

Almost surely, 2^1466668261 is an apocalyptic number.

It is an amenable number.

1466668261 is a deficient number, since it is larger than the sum of its proper divisors (269211).

1466668261 is an equidigital number, since it uses as much as digits as its factorization.

1466668261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269210.

The product of its digits is 497664, while the sum is 46.

The square root of 1466668261 is about 38297.1051255836. The cubic root of 1466668261 is about 1136.1716922623.

The spelling of 1466668261 in words is "one billion, four hundred sixty-six million, six hundred sixty-eight thousand, two hundred sixty-one".