1438233280511 has 4 divisors (see below), whose sum is σ = 1438235710224. Its totient is φ = 1438230850800.

The previous prime is 1438233280507. The next prime is 1438233280513. The reversal of 1438233280511 is 1150823328341.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1438233280511 - 2² = 1438233280507 is a prime.

It is a super-2 number, since 2×1438233280511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438233280513) 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, 316406 + ... + 1725276.

It is an arithmetic number, because the mean of its divisors is an integer number (359558927556).

Almost surely, 2^{1438233280511} is an apocalyptic number.

1438233280511 is a deficient number, since it is larger than the sum of its proper divisors (2429713).

1438233280511 is a wasteful number, since it uses less digits than its factorization.

1438233280511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429712.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 1438233280511 in words is "one trillion, four hundred thirty-eight billion, two hundred thirty-three million, two hundred eighty thousand, five hundred eleven".