136994173 has 8 divisors (see below), whose sum is σ = 145015200. Its totient is φ = 129193008.

The previous prime is 136994171. The next prime is 136994183. The reversal of 136994173 is 371499631.

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 136994173 - 2¹ = 136994171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136994171) 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, 53683 + ... + 56176.

It is an arithmetic number, because the mean of its divisors is an integer number (18126900).

Almost surely, 2^136994173 is an apocalyptic number.

It is an amenable number.

136994173 is a deficient number, since it is larger than the sum of its proper divisors (8021027).

136994173 is a wasteful number, since it uses less digits than its factorization.

136994173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109931.

The product of its digits is 122472, while the sum is 43.

The square root of 136994173 is about 11704.4509909692. The cubic root of 136994173 is about 515.5063646893.

The spelling of 136994173 in words is "one hundred thirty-six million, nine hundred ninety-four thousand, one hundred seventy-three".