137488690 has 32 divisors (see below), whose sum is σ = 265970304. Its totient is φ = 50983680.

The previous prime is 137488669. The next prime is 137488699. The reversal of 137488690 is 96884731.

It is a happy number.

It is a super-3 number, since 3×137488690³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 137488690.

It is not an unprimeable number, because it can be changed into a prime (137488699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5355 + ... + 17425.

It is an arithmetic number, because the mean of its divisors is an integer number (8311572).

Almost surely, 2^137488690 is an apocalyptic number.

137488690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137488690 is a deficient number, since it is larger than the sum of its proper divisors (128481614).

137488690 is a wasteful number, since it uses less digits than its factorization.

137488690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 137488690 is about 11725.5571296207. The cubic root of 137488690 is about 516.1259057182.

The spelling of 137488690 in words is "one hundred thirty-seven million, four hundred eighty-eight thousand, six hundred ninety".