136745819 has 12 divisors (see below), whose sum is σ = 160652448. Its totient is φ = 116046000.

The previous prime is 136745813. The next prime is 136745839. The reversal of 136745819 is 918547631.

It is a de Polignac number, because none of the positive numbers 2^k-136745819 is a prime.

It is a super-2 number, since 2×136745819² = 37398838027961522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136745819.

It is not an unprimeable number, because it can be changed into a prime (136745813) 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 11 ways as a sum of consecutive naturals, for example, 8867 + ... + 18764.

It is an arithmetic number, because the mean of its divisors is an integer number (13387704).

Almost surely, 2^136745819 is an apocalyptic number.

136745819 is a deficient number, since it is larger than the sum of its proper divisors (23906629).

136745819 is a wasteful number, since it uses less digits than its factorization.

136745819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27746 (or 27739 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 136745819 is about 11693.8367955090. The cubic root of 136745819 is about 515.1946591877.

The spelling of 136745819 in words is "one hundred thirty-six million, seven hundred forty-five thousand, eight hundred nineteen".