8120041993 has 16 divisors (see below), whose sum is σ = 9830471040. Its totient is φ = 6547597056.

The previous prime is 8120041961. The next prime is 8120042057. The reversal of 8120041993 is 3991400218.

It is not a de Polignac number, because 8120041993 - 2⁵ = 8120041961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8120041393) 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, 263755 + ... + 292927.

It is an arithmetic number, because the mean of its divisors is an integer number (614404440).

Almost surely, 2^8120041993 is an apocalyptic number.

It is an amenable number.

8120041993 is a deficient number, since it is larger than the sum of its proper divisors (1710429047).

8120041993 is a wasteful number, since it uses less digits than its factorization.

8120041993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31536.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 8120041993 is about 90111.2756152081. The cubic root of 8120041993 is about 2009.9538773935.

The spelling of 8120041993 in words is "eight billion, one hundred twenty million, forty-one thousand, nine hundred ninety-three".