1461213065 has 16 divisors (see below), whose sum is σ = 1939376208. Its totient is φ = 1049884416.

The previous prime is 1461213049. The next prime is 1461213067. The reversal of 1461213065 is 5603121641.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 107267449 + 1353945616 = 10357^2 + 36796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461213065 - 2⁴ = 1461213049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1461213067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301382 + ... + 306191.

It is an arithmetic number, because the mean of its divisors is an integer number (121211013).

Almost surely, 2^1461213065 is an apocalyptic number.

It is an amenable number.

1461213065 is a deficient number, since it is larger than the sum of its proper divisors (478163143).

1461213065 is a wasteful number, since it uses less digits than its factorization.

1461213065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607628.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1461213065 is about 38225.8167342439. The cubic root of 1461213065 is about 1134.7612984279.

The spelling of 1461213065 in words is "one billion, four hundred sixty-one million, two hundred thirteen thousand, sixty-five".