136419897 has 16 divisors (see below), whose sum is σ = 188393472. Its totient is φ = 87751440.

The previous prime is 136419887. The next prime is 136419911. The reversal of 136419897 is 798914631.

It is a happy number.

It is not a de Polignac number, because 136419897 - 2¹⁵ = 136387129 is a prime.

It is a super-2 number, since 2×136419897² = 37220776594981218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136419817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3198 + ... + 16824.

It is an arithmetic number, because the mean of its divisors is an integer number (11774592).

Almost surely, 2^136419897 is an apocalyptic number.

It is an amenable number.

136419897 is a deficient number, since it is larger than the sum of its proper divisors (51973575).

136419897 is a wasteful number, since it uses less digits than its factorization.

136419897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13748.

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

The square root of 136419897 is about 11679.8928505359. The cubic root of 136419897 is about 514.7850260592.

The spelling of 136419897 in words is "one hundred thirty-six million, four hundred nineteen thousand, eight hundred ninety-seven".