1438810734 has 8 divisors (see below), whose sum is σ = 2877621480. Its totient is φ = 479603576.

The previous prime is 1438810687. The next prime is 1438810741. The reversal of 1438810734 is 4370188341.

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

1438810734 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1438810692 and 1438810701.

It is a congruent number.

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, 119900889 + ... + 119900900.

It is an arithmetic number, because the mean of its divisors is an integer number (359702685).

Almost surely, 2^1438810734 is an apocalyptic number.

1438810734 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.

1438810734 is a wasteful number, since it uses less digits than its factorization.

1438810734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239801794.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1438810734 is about 37931.6587298789. The cubic root of 1438810734 is about 1128.9322762163.

The spelling of 1438810734 in words is "one billion, four hundred thirty-eight million, eight hundred ten thousand, seven hundred thirty-four".