1205499487 has 2 divisors, whose sum is σ = 1205499488. Its totient is φ = 1205499486.

The previous prime is 1205499457. The next prime is 1205499523. The reversal of 1205499487 is 7849945021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205499487 - 2²⁷ = 1071281759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1205499487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205499457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602749743 + 602749744.

It is an arithmetic number, because the mean of its divisors is an integer number (602749744).

Almost surely, 2^1205499487 is an apocalyptic number.

1205499487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205499487 is an equidigital number, since it uses as much as digits as its factorization.

1205499487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 1205499487 is about 34720.3036709070. The cubic root of 1205499487 is about 1064.2794503019.

The spelling of 1205499487 in words is "one billion, two hundred five million, four hundred ninety-nine thousand, four hundred eighty-seven".