1461719261 has 2 divisors, whose sum is σ = 1461719262. Its totient is φ = 1461719260.

The previous prime is 1461719227. The next prime is 1461719269. The reversal of 1461719261 is 1629171641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1160696761 + 301022500 = 34069^2 + 17350^2 .

It is an emirp because it is prime and its reverse (1629171641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1461719261 - 2⁶ = 1461719197 is a prime.

It is a super-2 number, since 2×1461719261² = 4273246395956772242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1461719269) 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 as a sum of consecutive naturals, namely, 730859630 + 730859631.

It is an arithmetic number, because the mean of its divisors is an integer number (730859631).

Almost surely, 2^1461719261 is an apocalyptic number.

It is an amenable number.

1461719261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461719261 is an equidigital number, since it uses as much as digits as its factorization.

1461719261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 1461719261 is about 38232.4372882504. The cubic root of 1461719261 is about 1134.8923186346.

The spelling of 1461719261 in words is "one billion, four hundred sixty-one million, seven hundred nineteen thousand, two hundred sixty-one".