138373850 has 12 divisors (see below), whose sum is σ = 257375454. Its totient is φ = 55349520.

The previous prime is 138373849. The next prime is 138373867. The reversal of 138373850 is 58373831.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 113443801 + 24930049 = 10651^2 + 4993^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1383689 + ... + 1383788.

Almost surely, 2^138373850 is an apocalyptic number.

138373850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138373850 is a deficient number, since it is larger than the sum of its proper divisors (119001604).

138373850 is a wasteful number, since it uses less digits than its factorization.

138373850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767489 (or 2767484 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 138373850 is about 11763.2414750357. The cubic root of 138373850 is about 517.2311531899.

The spelling of 138373850 in words is "one hundred thirty-eight million, three hundred seventy-three thousand, eight hundred fifty".