138782895 has 16 divisors (see below), whose sum is σ = 222426240. Its totient is φ = 73893024.

The previous prime is 138782867. The next prime is 138782923. The reversal of 138782895 is 598287831.

It is an interprime number because it is at equal distance from previous prime (138782867) and next prime (138782923).

It is not a de Polignac number, because 138782895 - 2¹² = 138778799 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1812 + ... + 16758.

It is an arithmetic number, because the mean of its divisors is an integer number (13901640).

Almost surely, 2^138782895 is an apocalyptic number.

138782895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138782895 is a deficient number, since it is larger than the sum of its proper divisors (83643345).

138782895 is a wasteful number, since it uses less digits than its factorization.

138782895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15574.

The product of its digits is 967680, while the sum is 51.

The square root of 138782895 is about 11780.6152216257. The cubic root of 138782895 is about 517.7403117361.

The spelling of 138782895 in words is "one hundred thirty-eight million, seven hundred eighty-two thousand, eight hundred ninety-five".