137644463 has 16 divisors (see below), whose sum is σ = 154483200. Its totient is φ = 121577280.

The previous prime is 137644459. The next prime is 137644471. The reversal of 137644463 is 364446731.

It is a happy number.

It is not a de Polignac number, because 137644463 - 2² = 137644459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137644963) 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 15 ways as a sum of consecutive naturals, for example, 56570 + ... + 58952.

It is an arithmetic number, because the mean of its divisors is an integer number (9655200).

Almost surely, 2^137644463 is an apocalyptic number.

137644463 is a deficient number, since it is larger than the sum of its proper divisors (16838737).

137644463 is a wasteful number, since it uses less digits than its factorization.

137644463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542.

The product of its digits is 145152, while the sum is 38.

The square root of 137644463 is about 11732.1977054600. The cubic root of 137644463 is about 516.3207535909.

The spelling of 137644463 in words is "one hundred thirty-seven million, six hundred forty-four thousand, four hundred sixty-three".