136498791 has 16 divisors (see below), whose sum is σ = 213816960. Its totient is φ = 76362720.

The previous prime is 136498781. The next prime is 136498823. The reversal of 136498791 is 197894631.

It is a happy number.

It is not a de Polignac number, because 136498791 - 2¹⁷ = 136367719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136498791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136498741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158661 + ... + 159518.

It is an arithmetic number, because the mean of its divisors is an integer number (13363560).

Almost surely, 2^136498791 is an apocalyptic number.

136498791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136498791 is a deficient number, since it is larger than the sum of its proper divisors (77318169).

136498791 is a wasteful number, since it uses less digits than its factorization.

136498791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318206.

The product of its digits is 326592, while the sum is 48.

The square root of 136498791 is about 11683.2697050098. The cubic root of 136498791 is about 514.8842433144.

The spelling of 136498791 in words is "one hundred thirty-six million, four hundred ninety-eight thousand, seven hundred ninety-one".