1938067631355 has 32 divisors (see below), whose sum is σ = 3456120614400. Its totient is φ = 921632159232.

The previous prime is 1938067631351. The next prime is 1938067631371. The reversal of 1938067631355 is 5531367608391.

It is not a de Polignac number, because 1938067631355 - 2² = 1938067631351 is a prime.

It is a super-2 number, since 2×1938067631355² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 1938067631295 and 1938067631304.

It is not an unprimeable number, because it can be changed into a prime (1938067631351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200002135 + ... + 200011824.

It is an arithmetic number, because the mean of its divisors is an integer number (108003769200).

Almost surely, 2^{1938067631355} is an apocalyptic number.

1938067631355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1938067631355 is a deficient number, since it is larger than the sum of its proper divisors (1518052983045).

1938067631355 is a wasteful number, since it uses less digits than its factorization.

1938067631355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400014003.

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 1938067631355 in words is "one trillion, nine hundred thirty-eight billion, sixty-seven million, six hundred thirty-one thousand, three hundred fifty-five".