1436340889 has 2 divisors, whose sum is σ = 1436340890. Its totient is φ = 1436340888.

The previous prime is 1436340881. The next prime is 1436340901. The reversal of 1436340889 is 9880436341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1272705625 + 163635264 = 35675^2 + 12792^2 .

It is a cyclic number.

It is not a de Polignac number, because 1436340889 - 2³ = 1436340881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1436340881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718170444 + 718170445.

It is an arithmetic number, because the mean of its divisors is an integer number (718170445).

Almost surely, 2^1436340889 is an apocalyptic number.

It is an amenable number.

1436340889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1436340889 is an equidigital number, since it uses as much as digits as its factorization.

1436340889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 1436340889 is about 37899.0882344153. The cubic root of 1436340889 is about 1128.2859357718.

The spelling of 1436340889 in words is "one billion, four hundred thirty-six million, three hundred forty thousand, eight hundred eighty-nine".