137994206 has 16 divisors (see below), whose sum is σ = 244193280. Its totient is φ = 57232440.

The previous prime is 137994203. The next prime is 137994217. The reversal of 137994206 is 602499731.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137994203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158546 + ... + 159413.

It is an arithmetic number, because the mean of its divisors is an integer number (15262080).

Almost surely, 2^137994206 is an apocalyptic number.

137994206 is a deficient number, since it is larger than the sum of its proper divisors (106199074).

137994206 is a wasteful number, since it uses less digits than its factorization.

137994206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317999.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 137994206 is about 11747.0935128652. The cubic root of 137994206 is about 516.7576929226.

The spelling of 137994206 in words is "one hundred thirty-seven million, nine hundred ninety-four thousand, two hundred six".