3154261981 has 8 divisors (see below), whose sum is σ = 3460990680. Its totient is φ = 2856689472.

The previous prime is 3154261969. The next prime is 3154261987. The reversal of 3154261981 is 1891624513.

It can be written as a sum of positive squares in 4 ways, for example, as 358496356 + 2795765625 = 18934^2 + 52875^2 .

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-3154261981 is a prime.

It is a super-2 number, since 2×3154261981² = 19898737289564088722, 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 (3154261987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2288326 + ... + 2289703.

It is an arithmetic number, because the mean of its divisors is an integer number (432623835).

Almost surely, 2^3154261981 is an apocalyptic number.

It is an amenable number.

3154261981 is a deficient number, since it is larger than the sum of its proper divisors (306728699).

3154261981 is a wasteful number, since it uses less digits than its factorization.

3154261981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578095.

The product of its digits is 51840, while the sum is 40.

The square root of 3154261981 is about 56162.8167117711. The cubic root of 3154261981 is about 1466.5580353828.

The spelling of 3154261981 in words is "three billion, one hundred fifty-four million, two hundred sixty-one thousand, nine hundred eighty-one".