137643146 has 4 divisors (see below), whose sum is σ = 206464722. Its totient is φ = 68821572.

The previous prime is 137643139. The next prime is 137643151. The reversal of 137643146 is 641346731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 128709025 + 8934121 = 11345^2 + 2989^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34410785 + ... + 34410788.

Almost surely, 2^137643146 is an apocalyptic number.

137643146 is a deficient number, since it is larger than the sum of its proper divisors (68821576).

137643146 is an equidigital number, since it uses as much as digits as its factorization.

137643146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68821575.

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

The square root of 137643146 is about 11732.1415777342. The cubic root of 137643146 is about 516.3191068445.

Adding to 137643146 its reverse (641346731), we get a palindrome (778989877).

The spelling of 137643146 in words is "one hundred thirty-seven million, six hundred forty-three thousand, one hundred forty-six".