1461554641 has 2 divisors, whose sum is σ = 1461554642. Its totient is φ = 1461554640.

The previous prime is 1461554569. The next prime is 1461554657. The reversal of 1461554641 is 1464551641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1305304641 + 156250000 = 36129^2 + 12500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461554641 - 2²⁹ = 924683729 is a prime.

It is a super-2 number, since 2×1461554641² = 4272283937257277762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1461554641.

It is not a weakly prime, because it can be changed into another prime (1461554671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730777320 + 730777321.

It is an arithmetic number, because the mean of its divisors is an integer number (730777321).

Almost surely, 2^1461554641 is an apocalyptic number.

It is an amenable number.

1461554641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461554641 is an equidigital number, since it uses as much as digits as its factorization.

1461554641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The square root of 1461554641 is about 38230.2843436980. The cubic root of 1461554641 is about 1134.8497128730.

The spelling of 1461554641 in words is "one billion, four hundred sixty-one million, five hundred fifty-four thousand, six hundred forty-one".