136197843 has 4 divisors (see below), whose sum is σ = 181597128. Its totient is φ = 90798560.

The previous prime is 136197823. The next prime is 136197889. The reversal of 136197843 is 348791631.

136197843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348791631 = 3 ⋅116263877.

It is a cyclic number.

It is not a de Polignac number, because 136197843 - 2⁹ = 136197331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136197795 and 136197804.

It is not an unprimeable number, because it can be changed into a prime (136197823) 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, 22699638 + ... + 22699643.

It is an arithmetic number, because the mean of its divisors is an integer number (45399282).

Almost surely, 2^136197843 is an apocalyptic number.

136197843 is a deficient number, since it is larger than the sum of its proper divisors (45399285).

136197843 is an equidigital number, since it uses as much as digits as its factorization.

136197843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45399284.

The product of its digits is 108864, while the sum is 42.

The square root of 136197843 is about 11670.3831556637. The cubic root of 136197843 is about 514.5055649869.

The spelling of 136197843 in words is "one hundred thirty-six million, one hundred ninety-seven thousand, eight hundred forty-three".