136378967 has 4 divisors (see below), whose sum is σ = 141081720. Its totient is φ = 131676216.

The previous prime is 136378961. The next prime is 136378973. The reversal of 136378967 is 769873631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 769873631 = 5303 ⋅145177.

It is an interprime number because it is at equal distance from previous prime (136378961) and next prime (136378973).

It is a cyclic number.

It is not a de Polignac number, because 136378967 - 2¹⁶ = 136313431 is a prime.

It is a super-3 number, since 3×136378967³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136378961) 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, 2351333 + ... + 2351390.

It is an arithmetic number, because the mean of its divisors is an integer number (35270430).

Almost surely, 2^136378967 is an apocalyptic number.

136378967 is a deficient number, since it is larger than the sum of its proper divisors (4702753).

136378967 is an equidigital number, since it uses as much as digits as its factorization.

136378967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702752.

The product of its digits is 1143072, while the sum is 50.

The square root of 136378967 is about 11678.1405626067. The cubic root of 136378967 is about 514.7335373366.

The spelling of 136378967 in words is "one hundred thirty-six million, three hundred seventy-eight thousand, nine hundred sixty-seven".