136487738 has 4 divisors (see below), whose sum is σ = 204731610. Its totient is φ = 68243868.

The previous prime is 136487723. The next prime is 136487749. The reversal of 136487738 is 837784631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837784631 = 17389 ⋅48179.

It can be written as a sum of positive squares in only one way, i.e., 89056969 + 47430769 = 9437^2 + 6887^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136487692 and 136487701.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34121933 + ... + 34121936.

Almost surely, 2^136487738 is an apocalyptic number.

136487738 is a deficient number, since it is larger than the sum of its proper divisors (68243872).

136487738 is an equidigital number, since it uses as much as digits as its factorization.

136487738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68243871.

The product of its digits is 677376, while the sum is 47.

The square root of 136487738 is about 11682.7966686064. The cubic root of 136487738 is about 514.8703453423.

The spelling of 136487738 in words is "one hundred thirty-six million, four hundred eighty-seven thousand, seven hundred thirty-eight".