136461437 has 4 divisors (see below), whose sum is σ = 155955936. Its totient is φ = 116966940.

The previous prime is 136461433. The next prime is 136461449. The reversal of 136461437 is 734164631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734164631 = 83 ⋅8845357.

It is a cyclic number.

It is not a de Polignac number, because 136461437 - 2² = 136461433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136461397 and 136461406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136461433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9747239 + ... + 9747252.

It is an arithmetic number, because the mean of its divisors is an integer number (38988984).

Almost surely, 2^136461437 is an apocalyptic number.

It is an amenable number.

136461437 is a deficient number, since it is larger than the sum of its proper divisors (19494499).

136461437 is an equidigital number, since it uses as much as digits as its factorization.

136461437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19494498.

The product of its digits is 36288, while the sum is 35.

The square root of 136461437 is about 11681.6709849233. The cubic root of 136461437 is about 514.8372716145.

The spelling of 136461437 in words is "one hundred thirty-six million, four hundred sixty-one thousand, four hundred thirty-seven".