1438287460 has 24 divisors (see below), whose sum is σ = 3179373120. Its totient is φ = 545035104.

The previous prime is 1438287449. The next prime is 1438287493. The reversal of 1438287460 is 647828341.

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, 1892104 + ... + 1892863.

It is an arithmetic number, because the mean of its divisors is an integer number (132473880).

Almost surely, 2^1438287460 is an apocalyptic number.

1438287460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1438287460 is an abundant number, since it is smaller than the sum of its proper divisors (1741085660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1438287460 is a wasteful number, since it uses less digits than its factorization.

1438287460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784995 (or 3784993 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 1438287460 is about 37924.7605134166. The cubic root of 1438287460 is about 1128.7954010126.

The spelling of 1438287460 in words is "one billion, four hundred thirty-eight million, two hundred eighty-seven thousand, four hundred sixty".