891374737069 has 4 divisors (see below), whose sum is σ = 906482783520. Its totient is φ = 876266690620.

The previous prime is 891374737061. The next prime is 891374737081. The reversal of 891374737069 is 960737473198.

891374737069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 891374737069 - 2³ = 891374737061 is a prime.

It is a super-2 number, since 2×891374737069² (a number of 25 digits) contains 22 as substring.

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 891374737069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891374737061) 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, 7554023137 + ... + 7554023254.

It is an arithmetic number, because the mean of its divisors is an integer number (226620695880).

Almost surely, 2^891374737069 is an apocalyptic number.

It is an amenable number.

891374737069 is a deficient number, since it is larger than the sum of its proper divisors (15108046451).

891374737069 is a wasteful number, since it uses less digits than its factorization.

891374737069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15108046450.

The product of its (nonzero) digits is 48009024, while the sum is 64.

The spelling of 891374737069 in words is "eight hundred ninety-one billion, three hundred seventy-four million, seven hundred thirty-seven thousand, sixty-nine".