1438909496531 has 8 divisors (see below), whose sum is σ = 1574998037424. Its totient is φ = 1306449983520.

The previous prime is 1438909496503. The next prime is 1438909496551. The reversal of 1438909496531 is 1356949098341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438909496531 is a prime.

It is a super-2 number, since 2×1438909496531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438909496551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907256141 + ... + 907257726.

It is an arithmetic number, because the mean of its divisors is an integer number (196874754678).

Almost surely, 2^{1438909496531} is an apocalyptic number.

1438909496531 is a deficient number, since it is larger than the sum of its proper divisors (136088540893).

1438909496531 is a wasteful number, since it uses less digits than its factorization.

1438909496531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814513941.

The product of its (nonzero) digits is 25194240, while the sum is 62.

The spelling of 1438909496531 in words is "one trillion, four hundred thirty-eight billion, nine hundred nine million, four hundred ninety-six thousand, five hundred thirty-one".