1438755716 has 12 divisors (see below), whose sum is σ = 2519665932. Its totient is φ = 718851168.

The previous prime is 1438755709. The next prime is 1438755739. The reversal of 1438755716 is 6175578341.

It can be written as a sum of positive squares in 2 ways, for example, as 1199929600 + 238826116 = 34640^2 + 15454^2 .

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, 125495 + ... + 136478.

It is an arithmetic number, because the mean of its divisors is an integer number (209972161).

Almost surely, 2^1438755716 is an apocalyptic number.

It is an amenable number.

1438755716 is a deficient number, since it is larger than the sum of its proper divisors (1080910216).

1438755716 is a wasteful number, since it uses less digits than its factorization.

1438755716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263350 (or 263348 counting only the distinct ones).

The product of its digits is 705600, while the sum is 47.

The square root of 1438755716 is about 37930.9334976085. The cubic root of 1438755716 is about 1128.9178864646.

The spelling of 1438755716 in words is "one billion, four hundred thirty-eight million, seven hundred fifty-five thousand, seven hundred sixteen".