1461800117 has 2 divisors, whose sum is σ = 1461800118. Its totient is φ = 1461800116.

The previous prime is 1461800057. The next prime is 1461800161. The reversal of 1461800117 is 7110081641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806900836 + 654899281 = 28406^2 + 25591^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461800117 - 2¹⁴ = 1461783733 is a prime.

It is a super-2 number, since 2×1461800117² = 4273719164122427378, 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 1461800117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1461809117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730900058 + 730900059.

It is an arithmetic number, because the mean of its divisors is an integer number (730900059).

Almost surely, 2^1461800117 is an apocalyptic number.

It is an amenable number.

1461800117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461800117 is an equidigital number, since it uses as much as digits as its factorization.

1461800117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 1461800117 is about 38233.4947003279. The cubic root of 1461800117 is about 1134.9132440302.

Adding to 1461800117 its reverse (7110081641), we get a palindrome (8571881758).

The spelling of 1461800117 in words is "one billion, four hundred sixty-one million, eight hundred thousand, one hundred seventeen".