1438858842 has 32 divisors (see below), whose sum is σ = 2945246400. Its totient is φ = 468469248.

The previous prime is 1438858829. The next prime is 1438858843. The reversal of 1438858842 is 2488588341.

It is not an unprimeable number, because it can be changed into a prime (1438858843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42634 + ... + 68522.

It is an arithmetic number, because the mean of its divisors is an integer number (92038950).

Almost surely, 2^1438858842 is an apocalyptic number.

1438858842 is an abundant number, since it is smaller than the sum of its proper divisors (1506387558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1438858842 is a wasteful number, since it uses less digits than its factorization.

1438858842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26110.

The product of its digits is 1966080, while the sum is 51.

The square root of 1438858842 is about 37932.2928650510. The cubic root of 1438858842 is about 1128.9448583828.

The spelling of 1438858842 in words is "one billion, four hundred thirty-eight million, eight hundred fifty-eight thousand, eight hundred forty-two".