138763895 has 8 divisors (see below), whose sum is σ = 168624960. Its totient is φ = 109605600.

The previous prime is 138763879. The next prime is 138763903. The reversal of 138763895 is 598367831.

It is a happy number.

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

It is not a de Polignac number, because 138763895 - 2⁴ = 138763879 is a prime.

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, 175256 + ... + 176045.

It is an arithmetic number, because the mean of its divisors is an integer number (21078120).

Almost surely, 2^138763895 is an apocalyptic number.

138763895 is a deficient number, since it is larger than the sum of its proper divisors (29861065).

138763895 is an equidigital number, since it uses as much as digits as its factorization.

138763895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351385.

The product of its digits is 1088640, while the sum is 50.

The square root of 138763895 is about 11779.8087845262. The cubic root of 138763895 is about 517.7166836686.

It can be divided in two parts, 13876 and 3895, that added together give a palindrome (17771).

The spelling of 138763895 in words is "one hundred thirty-eight million, seven hundred sixty-three thousand, eight hundred ninety-five".