1438344734 has 16 divisors (see below), whose sum is σ = 2223081168. Its totient is φ = 697444992.

The previous prime is 1438344709. The next prime is 1438344751. The reversal of 1438344734 is 4374438341.

It is a junction number, because it is equal to n+sod(n) for n = 1438344691 and 1438344700.

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, 8939 + ... + 54374.

It is an arithmetic number, because the mean of its divisors is an integer number (138942573).

Almost surely, 2^1438344734 is an apocalyptic number.

1438344734 is a deficient number, since it is larger than the sum of its proper divisors (784736434).

1438344734 is a wasteful number, since it uses less digits than its factorization.

1438344734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63659.

The product of its digits is 387072, while the sum is 41.

The square root of 1438344734 is about 37925.5156062512. The cubic root of 1438344734 is about 1128.8103840558.

The spelling of 1438344734 in words is "one billion, four hundred thirty-eight million, three hundred forty-four thousand, seven hundred thirty-four".