138263750 has 40 divisors (see below), whose sum is σ = 264177936. Its totient is φ = 54236000.

The previous prime is 138263747. The next prime is 138263773. The reversal of 138263750 is 57362831.

It is a super-5 number, since 5×138263750⁵ (a number of 42 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138263750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65207 + ... + 67293.

Almost surely, 2^138263750 is an apocalyptic number.

138263750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138263750 is a deficient number, since it is larger than the sum of its proper divisors (125914186).

138263750 is an equidigital number, since it uses as much as digits as its factorization.

138263750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 138263750 is about 11758.5607112435. The cubic root of 138263750 is about 517.0939349213.

It can be divided in two parts, 13826 and 3750, that added together give a cube (17576 = 26³).

The spelling of 138263750 in words is "one hundred thirty-eight million, two hundred sixty-three thousand, seven hundred fifty".