136449138 has 32 divisors (see below), whose sum is σ = 312238080. Its totient is φ = 38941200.

The previous prime is 136449109. The next prime is 136449167. The reversal of 136449138 is 831944631.

It is an interprime number because it is at equal distance from previous prime (136449109) and next prime (136449167).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 136449096 and 136449105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59823 + ... + 62061.

It is an arithmetic number, because the mean of its divisors is an integer number (9757440).

Almost surely, 2^136449138 is an apocalyptic number.

136449138 is an abundant number, since it is smaller than the sum of its proper divisors (175788942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136449138 is a wasteful number, since it uses less digits than its factorization.

136449138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702.

The product of its digits is 62208, while the sum is 39.

The square root of 136449138 is about 11681.1445500858. The cubic root of 136449138 is about 514.8218040608.

The spelling of 136449138 in words is "one hundred thirty-six million, four hundred forty-nine thousand, one hundred thirty-eight".