138807495 has 12 divisors (see below), whose sum is σ = 240599736. Its totient is φ = 74030640.

The previous prime is 138807479. The next prime is 138807511. The reversal of 138807495 is 594708831.

It is an interprime number because it is at equal distance from previous prime (138807479) and next prime (138807511).

It is not a de Polignac number, because 138807495 - 2⁴ = 138807479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3084611 = 138807495 / (1 + 3 + 8 + 8 + 0 + 7 + 4 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 138807495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1542261 + ... + 1542350.

It is an arithmetic number, because the mean of its divisors is an integer number (20049978).

Almost surely, 2^138807495 is an apocalyptic number.

138807495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138807495 is a deficient number, since it is larger than the sum of its proper divisors (101792241).

138807495 is a wasteful number, since it uses less digits than its factorization.

138807495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084622 (or 3084619 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 138807495 is about 11781.6592634484. The cubic root of 138807495 is about 517.7709006624.

The spelling of 138807495 in words is "one hundred thirty-eight million, eight hundred seven thousand, four hundred ninety-five".