136381949 has 8 divisors (see below), whose sum is σ = 152409600. Its totient is φ = 120959200.

The previous prime is 136381913. The next prime is 136382003. The reversal of 136381949 is 949183631.

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

It is a cyclic number.

It is not a de Polignac number, because 136381949 - 2¹⁶ = 136316413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136381249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150749 + ... + 151650.

It is an arithmetic number, because the mean of its divisors is an integer number (19051200).

Almost surely, 2^136381949 is an apocalyptic number.

It is an amenable number.

136381949 is a deficient number, since it is larger than the sum of its proper divisors (16027651).

136381949 is a wasteful number, since it uses less digits than its factorization.

136381949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302451.

The product of its digits is 139968, while the sum is 44.

The square root of 136381949 is about 11678.2682363439. The cubic root of 136381949 is about 514.7372889518.

The spelling of 136381949 in words is "one hundred thirty-six million, three hundred eighty-one thousand, nine hundred forty-nine".