7891426893 has 16 divisors (see below), whose sum is σ = 12063707136. Its totient is φ = 4494883440.

The previous prime is 7891426817. The next prime is 7891426909. The reversal of 7891426893 is 3986241987.

It is not a de Polignac number, because 7891426893 - 2⁹ = 7891426381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7891426793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597621 + ... + 610682.

It is an arithmetic number, because the mean of its divisors is an integer number (753981696).

Almost surely, 2^7891426893 is an apocalyptic number.

It is an amenable number.

7891426893 is a deficient number, since it is larger than the sum of its proper divisors (4172280243).

7891426893 is a wasteful number, since it uses less digits than its factorization.

7891426893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208624.

The product of its digits is 5225472, while the sum is 57.

The square root of 7891426893 is about 88833.7035870958. The cubic root of 7891426893 is about 1990.9109986810.

The spelling of 7891426893 in words is "seven billion, eight hundred ninety-one million, four hundred twenty-six thousand, eight hundred ninety-three".