1438137850 has 12 divisors (see below), whose sum is σ = 2674936494. Its totient is φ = 575255120.

The previous prime is 1438137839. The next prime is 1438137851. The reversal of 1438137850 is 587318341.

It can be written as a sum of positive squares in 3 ways, for example, as 1296504049 + 141633801 = 36007^2 + 11901^2 .

It is not an unprimeable number, because it can be changed into a prime (1438137851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14381329 + ... + 14381428.

Almost surely, 2^1438137850 is an apocalyptic number.

1438137850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1438137850 is a deficient number, since it is larger than the sum of its proper divisors (1236798644).

1438137850 is a wasteful number, since it uses less digits than its factorization.

1438137850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28762769 (or 28762764 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1438137850 is about 37922.7880040484. The cubic root of 1438137850 is about 1128.7562607293.

The spelling of 1438137850 in words is "one billion, four hundred thirty-eight million, one hundred thirty-seven thousand, eight hundred fifty".