1461169889 has 2 divisors, whose sum is σ = 1461169890. Its totient is φ = 1461169888.

The previous prime is 1461169883. The next prime is 1461169909. The reversal of 1461169889 is 9889611641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1355491489 + 105678400 = 36817^2 + 10280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461169889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1461169889.

It is not a weakly prime, because it can be changed into another prime (1461169883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730584944 + 730584945.

It is an arithmetic number, because the mean of its divisors is an integer number (730584945).

Almost surely, 2^1461169889 is an apocalyptic number.

It is an amenable number.

1461169889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461169889 is an equidigital number, since it uses as much as digits as its factorization.

1461169889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 53.

The square root of 1461169889 is about 38225.2519808568. The cubic root of 1461169889 is about 1134.7501216558.

The spelling of 1461169889 in words is "one billion, four hundred sixty-one million, one hundred sixty-nine thousand, eight hundred eighty-nine".