7901981114 has 8 divisors (see below), whose sum is σ = 12047282868. Its totient is φ = 3886220160.

The previous prime is 7901981111. The next prime is 7901981147. The reversal of 7901981114 is 4111891097.

It can be written as a sum of positive squares in 2 ways, for example, as 6251590489 + 1650390625 = 79067^2 + 40625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7901981111) 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, 32385047 + ... + 32385290.

Almost surely, 2^7901981114 is an apocalyptic number.

7901981114 is a deficient number, since it is larger than the sum of its proper divisors (4145301754).

7901981114 is a wasteful number, since it uses less digits than its factorization.

7901981114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64770400.

The product of its (nonzero) digits is 18144, while the sum is 41.

The square root of 7901981114 is about 88893.0881115062. The cubic root of 7901981114 is about 1991.7981704743.

The spelling of 7901981114 in words is "seven billion, nine hundred one million, nine hundred eighty-one thousand, one hundred fourteen".