1438541497 has 2 divisors, whose sum is σ = 1438541498. Its totient is φ = 1438541496.

The previous prime is 1438541473. The next prime is 1438541501. The reversal of 1438541497 is 7941458341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816587776 + 621953721 = 28576^2 + 24939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438541497 - 2¹⁹ = 1438017209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1438541597) 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, 719270748 + 719270749.

It is an arithmetic number, because the mean of its divisors is an integer number (719270749).

Almost surely, 2^1438541497 is an apocalyptic number.

It is an amenable number.

1438541497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438541497 is an equidigital number, since it uses as much as digits as its factorization.

1438541497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 1438541497 is about 37928.1095890634. The cubic root of 1438541497 is about 1128.8618547928.

The spelling of 1438541497 in words is "one billion, four hundred thirty-eight million, five hundred forty-one thousand, four hundred ninety-seven".