1461236489 has 2 divisors, whose sum is σ = 1461236490. Its totient is φ = 1461236488.

The previous prime is 1461236467. The next prime is 1461236507. The reversal of 1461236489 is 9846321641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 871135225 + 590101264 = 29515^2 + 24292^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461236489 - 2²⁴ = 1444459273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1461236419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730618244 + 730618245.

It is an arithmetic number, because the mean of its divisors is an integer number (730618245).

Almost surely, 2^1461236489 is an apocalyptic number.

It is an amenable number.

1461236489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461236489 is an equidigital number, since it uses as much as digits as its factorization.

1461236489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 1461236489 is about 38226.1231228070. The cubic root of 1461236489 is about 1134.7673619987.

The spelling of 1461236489 in words is "one billion, four hundred sixty-one million, two hundred thirty-six thousand, four hundred eighty-nine".