138032819 has 2 divisors, whose sum is σ = 138032820. Its totient is φ = 138032818.

The previous prime is 138032803. The next prime is 138032827. The reversal of 138032819 is 918230831.

138032819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138032819 - 2⁴ = 138032803 is a prime.

It is a super-2 number, since 2×138032819² = 38106118242173522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138032879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69016409 + 69016410.

It is an arithmetic number, because the mean of its divisors is an integer number (69016410).

Almost surely, 2^138032819 is an apocalyptic number.

138032819 is a deficient number, since it is larger than the sum of its proper divisors (1).

138032819 is an equidigital number, since it uses as much as digits as its factorization.

138032819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 138032819 is about 11748.7369108343. The cubic root of 138032819 is about 516.8058874678.

The spelling of 138032819 in words is "one hundred thirty-eight million, thirty-two thousand, eight hundred nineteen".