1381738161045 has 48 divisors (see below), whose sum is σ = 2430217734336. Its totient is φ = 669882470400.

The previous prime is 1381738161031. The next prime is 1381738161049. The reversal of 1381738161045 is 5401618371831.

It is not a de Polignac number, because 1381738161045 - 2¹² = 1381738156949 is a prime.

It is a super-3 number, since 3×1381738161045³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1381738160985 and 1381738161003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381738161049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36083029 + ... + 36121301.

It is an arithmetic number, because the mean of its divisors is an integer number (50629536132).

Almost surely, 2^{1381738161045} is an apocalyptic number.

1381738161045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1381738161045 is a deficient number, since it is larger than the sum of its proper divisors (1048479573291).

1381738161045 is a wasteful number, since it uses less digits than its factorization.

1381738161045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58194 (or 58183 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 1381738161045 in words is "one trillion, three hundred eighty-one billion, seven hundred thirty-eight million, one hundred sixty-one thousand, forty-five".