1438815354 has 8 divisors (see below), whose sum is σ = 2877630720. Its totient is φ = 479605116.

The previous prime is 1438815311. The next prime is 1438815373. The reversal of 1438815354 is 4535188341.

It is a happy number.

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

1438815354 is an admirable number.

It is a super-2 number, since 2×1438815354² = 4140379245812290632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119901274 + ... + 119901285.

It is an arithmetic number, because the mean of its divisors is an integer number (359703840).

Almost surely, 2^1438815354 is an apocalyptic number.

1438815354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1438815354 is a wasteful number, since it uses less digits than its factorization.

1438815354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239802564.

The product of its digits is 230400, while the sum is 42.

The square root of 1438815354 is about 37931.7196288278. The cubic root of 1438815354 is about 1128.9334845433.

The spelling of 1438815354 in words is "one billion, four hundred thirty-eight million, eight hundred fifteen thousand, three hundred fifty-four".