2938285981 has 4 divisors (see below), whose sum is σ = 3000802752. Its totient is φ = 2875769212.

The previous prime is 2938285979. The next prime is 2938285993. The reversal of 2938285981 is 1895828392.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2938285981 - 2¹ = 2938285979 is a prime.

It is a super-2 number, since 2×2938285981² = 17267049012282264722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2938285901) 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, 31258315 + ... + 31258408.

It is an arithmetic number, because the mean of its divisors is an integer number (750200688).

Almost surely, 2^2938285981 is an apocalyptic number.

It is an amenable number.

2938285981 is a deficient number, since it is larger than the sum of its proper divisors (62516771).

2938285981 is an equidigital number, since it uses as much as digits as its factorization.

2938285981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62516770.

The product of its digits is 2488320, while the sum is 55.

The square root of 2938285981 is about 54205.9589067475. The cubic root of 2938285981 is about 1432.2913013197.

The spelling of 2938285981 in words is "two billion, nine hundred thirty-eight million, two hundred eighty-five thousand, nine hundred eighty-one".