136538890 has 8 divisors (see below), whose sum is σ = 245770020. Its totient is φ = 54615552.

The previous prime is 136538863. The next prime is 136538891. The reversal of 136538890 is 98835631.

136538890 is digitally balanced in base 3, 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 2 ways, for example, as 135326689 + 1212201 = 11633^2 + 1101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (136538891) 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 3 ways as a sum of consecutive naturals, for example, 6826935 + ... + 6826954.

Almost surely, 2^136538890 is an apocalyptic number.

136538890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136538890 is a deficient number, since it is larger than the sum of its proper divisors (109231130).

136538890 is a wasteful number, since it uses less digits than its factorization.

136538890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13653896.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 136538890 is about 11684.9856653742. The cubic root of 136538890 is about 514.9346572453.

The spelling of 136538890 in words is "one hundred thirty-six million, five hundred thirty-eight thousand, eight hundred ninety".