1893165855497 has 4 divisors (see below), whose sum is σ = 2163618120576. Its totient is φ = 1622713590420.

The previous prime is 1893165855391. The next prime is 1893165855571. The reversal of 1893165855497 is 7945585613981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1893165855497 - 2¹⁶ = 1893165789961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1893165855497.

It is not an unprimeable number, because it can be changed into a prime (1893165852497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135226132529 + ... + 135226132542.

It is an arithmetic number, because the mean of its divisors is an integer number (540904530144).

Almost surely, 2^{1893165855497} is an apocalyptic number.

It is an amenable number.

1893165855497 is a deficient number, since it is larger than the sum of its proper divisors (270452265079).

1893165855497 is an equidigital number, since it uses as much as digits as its factorization.

1893165855497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270452265078.

The product of its digits is 326592000, while the sum is 71.

The spelling of 1893165855497 in words is "one trillion, eight hundred ninety-three billion, one hundred sixty-five million, eight hundred fifty-five thousand, four hundred ninety-seven".