1438597868 has 48 divisors (see below), whose sum is σ = 2724593760. Its totient is φ = 662098944.

The previous prime is 1438597841. The next prime is 1438597879. The reversal of 1438597868 is 8687958341.

It is a happy number.

Its product of digits (11612160) is a multiple of the sum of its prime divisors (1344).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2028698 + ... + 2029406.

It is an arithmetic number, because the mean of its divisors is an integer number (56762370).

Almost surely, 2^1438597868 is an apocalyptic number.

It is an amenable number.

1438597868 is a deficient number, since it is larger than the sum of its proper divisors (1285995892).

1438597868 is a wasteful number, since it uses less digits than its factorization.

1438597868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 1344 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The square root of 1438597868 is about 37928.8527113595. The cubic root of 1438597868 is about 1128.8765998756.

The spelling of 1438597868 in words is "one billion, four hundred thirty-eight million, five hundred ninety-seven thousand, eight hundred sixty-eight".