1438582973 has 2 divisors, whose sum is σ = 1438582974. Its totient is φ = 1438582972.

The previous prime is 1438582933. The next prime is 1438582987. The reversal of 1438582973 is 3792858341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857435524 + 581147449 = 29282^2 + 24107^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438582973 - 2¹² = 1438578877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1438582933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719291486 + 719291487.

It is an arithmetic number, because the mean of its divisors is an integer number (719291487).

Almost surely, 2^1438582973 is an apocalyptic number.

It is an amenable number.

1438582973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438582973 is an equidigital number, since it uses as much as digits as its factorization.

1438582973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 1438582973 is about 37928.6563563752. The cubic root of 1438582973 is about 1128.8727037961.

The spelling of 1438582973 in words is "one billion, four hundred thirty-eight million, five hundred eighty-two thousand, nine hundred seventy-three".