136919965 has 24 divisors (see below), whose sum is σ = 205836120. Its totient is φ = 86663808.

The previous prime is 136919941. The next prime is 136919969. The reversal of 136919965 is 569919631.

136919965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1570009 + 135349956 = 1253^2 + 11634^2 .

It is not a de Polignac number, because 136919965 - 2¹⁷ = 136788893 is a prime.

It is a super-3 number, since 3×136919965³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136919969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18310 + ... + 24679.

It is an arithmetic number, because the mean of its divisors is an integer number (8576505).

Almost surely, 2^136919965 is an apocalyptic number.

It is an amenable number.

136919965 is a deficient number, since it is larger than the sum of its proper divisors (68916155).

136919965 is a wasteful number, since it uses less digits than its factorization.

136919965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43021 (or 43014 counting only the distinct ones).

The product of its digits is 393660, while the sum is 49.

The square root of 136919965 is about 11701.2804854853. The cubic root of 136919965 is about 515.4132667983.

The spelling of 136919965 in words is "one hundred thirty-six million, nine hundred nineteen thousand, nine hundred sixty-five".