1438896513 has 4 divisors (see below), whose sum is σ = 1918528688. Its totient is φ = 959264340.

The previous prime is 1438896499. The next prime is 1438896559. The reversal of 1438896513 is 3156988341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1438896513 - 2⁹ = 1438896001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438896013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239816083 + ... + 239816088.

It is an arithmetic number, because the mean of its divisors is an integer number (479632172).

Almost surely, 2^1438896513 is an apocalyptic number.

It is an amenable number.

1438896513 is a deficient number, since it is larger than the sum of its proper divisors (479632175).

1438896513 is an equidigital number, since it uses as much as digits as its factorization.

1438896513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479632174.

The product of its digits is 622080, while the sum is 48.

The square root of 1438896513 is about 37932.7894176002. The cubic root of 1438896513 is about 1128.9547106605.

The spelling of 1438896513 in words is "one billion, four hundred thirty-eight million, eight hundred ninety-six thousand, five hundred thirteen".