138751503 has 16 divisors (see below), whose sum is σ = 206744832. Its totient is φ = 82040000.

The previous prime is 138751499. The next prime is 138751507. The reversal of 138751503 is 305157831.

It is an interprime number because it is at equal distance from previous prime (138751499) and next prime (138751507).

It is a cyclic number.

It is not a de Polignac number, because 138751503 - 2² = 138751499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138751507) 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, 49923 + ... + 52628.

It is an arithmetic number, because the mean of its divisors is an integer number (12921552).

Almost surely, 2^138751503 is an apocalyptic number.

138751503 is a deficient number, since it is larger than the sum of its proper divisors (67993329).

138751503 is a wasteful number, since it uses less digits than its factorization.

138751503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102606.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 138751503 is about 11779.2827880139. The cubic root of 138751503 is about 517.7012720321.

The spelling of 138751503 in words is "one hundred thirty-eight million, seven hundred fifty-one thousand, five hundred three".