3085148981 has 4 divisors (see below), whose sum is σ = 3089501100. Its totient is φ = 3080796864.

The previous prime is 3085148887. The next prime is 3085148987. The reversal of 3085148981 is 1898415803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1898415803 = 829 ⋅2290007.

It can be written as a sum of positive squares in 2 ways, for example, as 818532100 + 2266616881 = 28610^2 + 47609^2 .

It is a cyclic number.

It is not a de Polignac number, because 3085148981 - 2¹⁸ = 3084886837 is a prime.

It is a super-2 number, since 2×3085148981² = 19036288469930676722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3085148987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174996 + ... + 2176413.

It is an arithmetic number, because the mean of its divisors is an integer number (772375275).

Almost surely, 2^3085148981 is an apocalyptic number.

It is an amenable number.

3085148981 is a deficient number, since it is larger than the sum of its proper divisors (4352119).

3085148981 is an equidigital number, since it uses as much as digits as its factorization.

3085148981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352118.

The product of its (nonzero) digits is 276480, while the sum is 47.

The square root of 3085148981 is about 55544.1174293012. The cubic root of 3085148981 is about 1455.7675918961.

The spelling of 3085148981 in words is "three billion, eighty-five million, one hundred forty-eight thousand, nine hundred eighty-one".