1438609001 has 2 divisors, whose sum is σ = 1438609002. Its totient is φ = 1438609000.

The previous prime is 1438608979. The next prime is 1438609013. The reversal of 1438609001 is 1009068341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1108823401 + 329785600 = 33299^2 + 18160^2 .

It is an emirp because it is prime and its reverse (1009068341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1438609001 - 2²² = 1434414697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1438609031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719304500 + 719304501.

It is an arithmetic number, because the mean of its divisors is an integer number (719304501).

Almost surely, 2^1438609001 is an apocalyptic number.

It is an amenable number.

1438609001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438609001 is an equidigital number, since it uses as much as digits as its factorization.

1438609001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1438609001 is about 37928.9994726990. Note that the first 3 decimals coincide. The cubic root of 1438609001 is about 1128.8795119126.

The spelling of 1438609001 in words is "one billion, four hundred thirty-eight million, six hundred nine thousand, one".