1438546641 has 16 divisors (see below), whose sum is σ = 2196480000. Its totient is φ = 820373328.

The previous prime is 1438546631. The next prime is 1438546667. The reversal of 1438546641 is 1466458341.

It is not a de Polignac number, because 1438546641 - 2⁵ = 1438546609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1438546593 and 1438546602.

It is not an unprimeable number, because it can be changed into a prime (1438546631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58161 + ... + 79118.

It is an arithmetic number, because the mean of its divisors is an integer number (137280000).

Almost surely, 2^1438546641 is an apocalyptic number.

It is an amenable number.

1438546641 is a deficient number, since it is larger than the sum of its proper divisors (757933359).

1438546641 is a wasteful number, since it uses less digits than its factorization.

1438546641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137788.

The product of its digits is 276480, while the sum is 42.

The square root of 1438546641 is about 37928.1774015045. The cubic root of 1438546641 is about 1128.8632003358.

The spelling of 1438546641 in words is "one billion, four hundred thirty-eight million, five hundred forty-six thousand, six hundred forty-one".