1438287892 has 12 divisors (see below), whose sum is σ = 2523013920. Its totient is φ = 717426776.

The previous prime is 1438287883. The next prime is 1438287923. The reversal of 1438287892 is 2987828341.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427408 + ... + 430759.

It is an arithmetic number, because the mean of its divisors is an integer number (210251160).

Almost surely, 2^1438287892 is an apocalyptic number.

It is an amenable number.

1438287892 is a deficient number, since it is larger than the sum of its proper divisors (1084726028).

1438287892 is a wasteful number, since it uses less digits than its factorization.

1438287892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858590 (or 858588 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 1438287892 is about 37924.7662089036. The cubic root of 1438287892 is about 1128.7955140265.

The spelling of 1438287892 in words is "one billion, four hundred thirty-eight million, two hundred eighty-seven thousand, eight hundred ninety-two".