1438535929 has 2 divisors, whose sum is σ = 1438535930. Its totient is φ = 1438535928.

The previous prime is 1438535887. The next prime is 1438535933. The reversal of 1438535929 is 9295358341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 759829225 + 678706704 = 27565^2 + 26052^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438535929 - 2²¹ = 1436438777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1438535939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719267964 + 719267965.

It is an arithmetic number, because the mean of its divisors is an integer number (719267965).

Almost surely, 2^1438535929 is an apocalyptic number.

It is an amenable number.

1438535929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438535929 is an equidigital number, since it uses as much as digits as its factorization.

1438535929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 49.

The square root of 1438535929 is about 37928.0361869686. The cubic root of 1438535929 is about 1128.8603983382.

The spelling of 1438535929 in words is "one billion, four hundred thirty-eight million, five hundred thirty-five thousand, nine hundred twenty-nine".