1468661261 has 2 divisors, whose sum is σ = 1468661262. Its totient is φ = 1468661260.

The previous prime is 1468661213. The next prime is 1468661267. The reversal of 1468661261 is 1621668641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1072890025 + 395771236 = 32755^2 + 19894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1468661261 - 2⁶ = 1468661197 is a prime.

It is a super-2 number, since 2×1468661261² = 4313931799124220242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1468661267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 734330630 + 734330631.

It is an arithmetic number, because the mean of its divisors is an integer number (734330631).

Almost surely, 2^1468661261 is an apocalyptic number.

It is an amenable number.

1468661261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1468661261 is an equidigital number, since it uses as much as digits as its factorization.

1468661261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 1468661261 is about 38323.1165355846. The cubic root of 1468661261 is about 1136.6860929057.

The spelling of 1468661261 in words is "one billion, four hundred sixty-eight million, six hundred sixty-one thousand, two hundred sixty-one".