1438920310845 has 32 divisors (see below), whose sum is σ = 2303971807104. Its totient is φ = 766857977600.

The previous prime is 1438920310811. The next prime is 1438920310901. The reversal of 1438920310845 is 5480130298341.

It is not a de Polignac number, because 1438920310845 - 2¹⁰ = 1438920309821 is a prime.

It is a super-2 number, since 2×1438920310845² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1438920310794 and 1438920310803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167838979 + ... + 167847551.

It is an arithmetic number, because the mean of its divisors is an integer number (71999118972).

Almost surely, 2^{1438920310845} is an apocalyptic number.

1438920310845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1438920310845 is a deficient number, since it is larger than the sum of its proper divisors (865051496259).

1438920310845 is a wasteful number, since it uses less digits than its factorization.

1438920310845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15533.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 1438920310845 in words is "one trillion, four hundred thirty-eight billion, nine hundred twenty million, three hundred ten thousand, eight hundred forty-five".