1438864188490 has 16 divisors (see below), whose sum is σ = 2645060977152. Its totient is φ = 563300022544.

The previous prime is 1438864188473. The next prime is 1438864188493. The reversal of 1438864188490 is 948814688341.

It is not an unprimeable number, because it can be changed into a prime (1438864188493) 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 7 ways as a sum of consecutive naturals, for example, 1530706114 + ... + 1530707053.

It is an arithmetic number, because the mean of its divisors is an integer number (165316311072).

Almost surely, 2^{1438864188490} is an apocalyptic number.

1438864188490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1438864188490 is a deficient number, since it is larger than the sum of its proper divisors (1206196788662).

1438864188490 is a wasteful number, since it uses less digits than its factorization.

1438864188490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061413221.

The product of its (nonzero) digits is 42467328, while the sum is 64.

The spelling of 1438864188490 in words is "one trillion, four hundred thirty-eight billion, eight hundred sixty-four million, one hundred eighty-eight thousand, four hundred ninety".