138763747 has 2 divisors, whose sum is σ = 138763748. Its totient is φ = 138763746.

The previous prime is 138763717. The next prime is 138763769. The reversal of 138763747 is 747367831.

138763747 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 138763747 - 2¹¹ = 138761699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138763697 and 138763706.

It is not a weakly prime, because it can be changed into another prime (138763717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69381873 + 69381874.

It is an arithmetic number, because the mean of its divisors is an integer number (69381874).

Almost surely, 2^138763747 is an apocalyptic number.

138763747 is a deficient number, since it is larger than the sum of its proper divisors (1).

138763747 is an equidigital number, since it uses as much as digits as its factorization.

138763747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 46.

The square root of 138763747 is about 11779.8025025889. The cubic root of 138763747 is about 517.7164996099.

It can be divided in two parts, 1387637 and 47, that added together give a square (1387684 = 1178²).

The spelling of 138763747 in words is "one hundred thirty-eight million, seven hundred sixty-three thousand, seven hundred forty-seven".