981999995 has 8 divisors (see below), whose sum is σ = 1178568384. Its totient is φ = 785487744.

The previous prime is 981999983. The next prime is 982000007. The reversal of 981999995 is 599999189.

981999995 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (981999983) and next prime (982000007).

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

It is a cyclic number.

It is not a de Polignac number, because 981999995 - 2²² = 977805691 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59267 + ... + 74003.

It is an arithmetic number, because the mean of its divisors is an integer number (147321048).

Almost surely, 2^981999995 is an apocalyptic number.

981999995 is a deficient number, since it is larger than the sum of its proper divisors (196568389).

981999995 is a wasteful number, since it uses less digits than its factorization.

981999995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28069.

The product of its digits is 21257640, while the sum is 68.

The square root of 981999995 is about 31336.8791522066. The cubic root of 981999995 is about 993.9636339352.

The spelling of 981999995 in words is "nine hundred eighty-one million, nine hundred ninety-nine thousand, nine hundred ninety-five".