136484509 has 4 divisors (see below), whose sum is σ = 155982304. Its totient is φ = 116986716.

The previous prime is 136484503. The next prime is 136484519. The reversal of 136484509 is 905484631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 136484509 - 2¹³ = 136476317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136484503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9748887 + ... + 9748900.

It is an arithmetic number, because the mean of its divisors is an integer number (38995576).

Almost surely, 2^136484509 is an apocalyptic number.

It is an amenable number.

136484509 is a deficient number, since it is larger than the sum of its proper divisors (19497795).

136484509 is an equidigital number, since it uses as much as digits as its factorization.

136484509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19497794.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 136484509 is about 11682.6584731387. The cubic root of 136484509 is about 514.8662850766.

The spelling of 136484509 in words is "one hundred thirty-six million, four hundred eighty-four thousand, five hundred nine".