138031495 has 8 divisors (see below), whose sum is σ = 189300384. Its totient is φ = 94650144.

The previous prime is 138031489. The next prime is 138031507. The reversal of 138031495 is 594130831.

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 138031495 - 2¹⁵ = 137998727 is a prime.

It is a super-2 number, since 2×138031495² = 38105387223870050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138031495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1971844 + ... + 1971913.

It is an arithmetic number, because the mean of its divisors is an integer number (23662548).

Almost surely, 2^138031495 is an apocalyptic number.

138031495 is a deficient number, since it is larger than the sum of its proper divisors (51268889).

138031495 is an equidigital number, since it uses as much as digits as its factorization.

138031495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943769.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 138031495 is about 11748.6805642166. The cubic root of 138031495 is about 516.8042350753.

The spelling of 138031495 in words is "one hundred thirty-eight million, thirty-one thousand, four hundred ninety-five".