1438318855 has 8 divisors (see below), whose sum is σ = 1726430832. Its totient is φ = 1150356288.

The previous prime is 1438318841. The next prime is 1438318877. The reversal of 1438318855 is 5588138341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1438318855 - 2⁷ = 1438318727 is a prime.

It is a super-2 number, since 2×1438318855² = 4137522257297022050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14949 + ... + 55678.

It is an arithmetic number, because the mean of its divisors is an integer number (215803854).

Almost surely, 2^1438318855 is an apocalyptic number.

1438318855 is a deficient number, since it is larger than the sum of its proper divisors (288111977).

1438318855 is an equidigital number, since it uses as much as digits as its factorization.

1438318855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74705.

The product of its digits is 460800, while the sum is 46.

The square root of 1438318855 is about 37925.1744228026. The cubic root of 1438318855 is about 1128.8036140842.

The spelling of 1438318855 in words is "one billion, four hundred thirty-eight million, three hundred eighteen thousand, eight hundred fifty-five".