891793145104 has 15 divisors (see below), whose sum is σ = 1727856537367. Its totient is φ = 445894683856.

The previous prime is 891793145101. The next prime is 891793145107. The reversal of 891793145104 is 401541397198.

The square root of 891793145104 is 944348.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (891793145101) and next prime (891793145107).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891793145101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3659349 + ... + 3895435.

Almost surely, 2^891793145104 is an apocalyptic number.

891793145104 is the 944348-th square number.

It is an amenable number.

891793145104 is a deficient number, since it is larger than the sum of its proper divisors (836063392263).

891793145104 is an frugal number, since it uses more digits than its factorization.

891793145104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472182 (or 236089 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 891793145104 in words is "eight hundred ninety-one billion, seven hundred ninety-three million, one hundred forty-five thousand, one hundred four".