1438602881749 has 16 divisors (see below), whose sum is σ = 1592363556864. Its totient is φ = 1288692218800.

The previous prime is 1438602881741. The next prime is 1438602881761. The reversal of 1438602881749 is 9471882068341.

It is a cyclic number.

It is not a de Polignac number, because 1438602881749 - 2³ = 1438602881741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438602881741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 918552 + ... + 1928974.

It is an arithmetic number, because the mean of its divisors is an integer number (99522722304).

Almost surely, 2^{1438602881749} is an apocalyptic number.

It is an amenable number.

1438602881749 is a deficient number, since it is larger than the sum of its proper divisors (153760675115).

1438602881749 is a wasteful number, since it uses less digits than its factorization.

1438602881749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012328.

The product of its (nonzero) digits is 18579456, while the sum is 61.

The spelling of 1438602881749 in words is "one trillion, four hundred thirty-eight billion, six hundred two million, eight hundred eighty-one thousand, seven hundred forty-nine".