1438518051 has 24 divisors (see below), whose sum is σ = 2102680944. Its totient is φ = 947589120.

The previous prime is 1438518047. The next prime is 1438518091. The reversal of 1438518051 is 1508158341.

1438518051 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1438518051 - 2² = 1438518047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1438517997 and 1438518015.

It is not an unprimeable number, because it can be changed into a prime (1438518041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 846835 + ... + 848531.

It is an arithmetic number, because the mean of its divisors is an integer number (87611706).

Almost surely, 2^1438518051 is an apocalyptic number.

1438518051 is a deficient number, since it is larger than the sum of its proper divisors (664162893).

1438518051 is a wasteful number, since it uses less digits than its factorization.

1438518051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2768 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 1438518051 is about 37927.8005030611. The cubic root of 1438518051 is about 1128.8557218591.

The spelling of 1438518051 in words is "one billion, four hundred thirty-eight million, five hundred eighteen thousand, fifty-one".