137388563 has 8 divisors (see below), whose sum is σ = 155744400. Its totient is φ = 120145248.

The previous prime is 137388553. The next prime is 137388571. The reversal of 137388563 is 365883731.

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

It is a cyclic number.

It is not a de Polignac number, because 137388563 - 2⁴ = 137388547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137388553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277868 + ... + 278361.

It is an arithmetic number, because the mean of its divisors is an integer number (19468050).

Almost surely, 2^137388563 is an apocalyptic number.

137388563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

137388563 is a deficient number, since it is larger than the sum of its proper divisors (18355837).

137388563 is a wasteful number, since it uses less digits than its factorization.

137388563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556261.

The product of its digits is 362880, while the sum is 44.

The square root of 137388563 is about 11721.2867467697. The cubic root of 137388563 is about 516.0005846497. Note that the first 3 decimals are identical.

The spelling of 137388563 in words is "one hundred thirty-seven million, three hundred eighty-eight thousand, five hundred sixty-three".