1889764873201 has 4 divisors (see below), whose sum is σ = 1933712893552. Its totient is φ = 1845816852852.

The previous prime is 1889764873187. The next prime is 1889764873229. The reversal of 1889764873201 is 1023784679881.

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 1889764873201 - 2⁹ = 1889764872689 is a prime.

It is a super-2 number, since 2×1889764873201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1889764873301) 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, 21974010111 + ... + 21974010196.

It is an arithmetic number, because the mean of its divisors is an integer number (483428223388).

Almost surely, 2^{1889764873201} is an apocalyptic number.

It is an amenable number.

1889764873201 is a deficient number, since it is larger than the sum of its proper divisors (43948020351).

1889764873201 is an equidigital number, since it uses as much as digits as its factorization.

1889764873201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43948020350.

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 1889764873201 in words is "one trillion, eight hundred eighty-nine billion, seven hundred sixty-four million, eight hundred seventy-three thousand, two hundred one".