137563989 has 8 divisors (see below), whose sum is σ = 191393472. Its totient is φ = 87721920.

The previous prime is 137563973. The next prime is 137563997. The reversal of 137563989 is 989365731.

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

It is not a de Polignac number, because 137563989 - 2⁴ = 137563973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137563939) 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 7 ways as a sum of consecutive naturals, for example, 996772 + ... + 996909.

It is an arithmetic number, because the mean of its divisors is an integer number (23924184).

Almost surely, 2^137563989 is an apocalyptic number.

It is an amenable number.

137563989 is a deficient number, since it is larger than the sum of its proper divisors (53829483).

137563989 is a wasteful number, since it uses less digits than its factorization.

137563989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993707.

The product of its digits is 1224720, while the sum is 51.

The square root of 137563989 is about 11728.7675823166. The cubic root of 137563989 is about 516.2201114594.

The spelling of 137563989 in words is "one hundred thirty-seven million, five hundred sixty-three thousand, nine hundred eighty-nine".