136391974 has 8 divisors (see below), whose sum is σ = 207942048. Its totient is φ = 67077960.

The previous prime is 136391963. The next prime is 136391977. The reversal of 136391974 is 479193631.

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

It is a self number, because there is not a number n which added to its sum of digits gives 136391974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136391977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558862 + ... + 559105.

It is an arithmetic number, because the mean of its divisors is an integer number (25992756).

Almost surely, 2^136391974 is an apocalyptic number.

136391974 is a deficient number, since it is larger than the sum of its proper divisors (71550074).

136391974 is a wasteful number, since it uses less digits than its factorization.

136391974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118030.

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

The square root of 136391974 is about 11678.6974444927. The cubic root of 136391974 is about 514.7499008723.

The spelling of 136391974 in words is "one hundred thirty-six million, three hundred ninety-one thousand, nine hundred seventy-four".