1438325947 has 2 divisors, whose sum is σ = 1438325948. Its totient is φ = 1438325946.

The previous prime is 1438325929. The next prime is 1438325957. The reversal of 1438325947 is 7495238341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1438325947 - 2²³ = 1429937339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1438325897 and 1438325906.

It is not a weakly prime, because it can be changed into another prime (1438325957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719162973 + 719162974.

It is an arithmetic number, because the mean of its divisors is an integer number (719162974).

Almost surely, 2^1438325947 is an apocalyptic number.

1438325947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438325947 is an equidigital number, since it uses as much as digits as its factorization.

1438325947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 1438325947 is about 37925.2679225869. The cubic root of 1438325947 is about 1128.8054693664.

The spelling of 1438325947 in words is "one billion, four hundred thirty-eight million, three hundred twenty-five thousand, nine hundred forty-seven".