1981047095 has 8 divisors (see below), whose sum is σ = 2453942400. Its totient is φ = 1533713760.

The previous prime is 1981047073. The next prime is 1981047097. The reversal of 1981047095 is 5907401891.

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

It is a de Polignac number, because none of the positive numbers 2^k-1981047095 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1981047097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6390320 + ... + 6390629.

It is an arithmetic number, because the mean of its divisors is an integer number (306742800).

Almost surely, 2^1981047095 is an apocalyptic number.

1981047095 is a deficient number, since it is larger than the sum of its proper divisors (472895305).

1981047095 is a wasteful number, since it uses less digits than its factorization.

1981047095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12780985.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1981047095 is about 44508.9552225167. The cubic root of 1981047095 is about 1255.9285509733.

The spelling of 1981047095 in words is "one billion, nine hundred eighty-one million, forty-seven thousand, ninety-five".