2761242381 has 12 divisors (see below), whose sum is σ = 3990617280. Its totient is φ = 1839833160.

The previous prime is 2761242361. The next prime is 2761242413. The reversal of 2761242381 is 1832421672.

It is a happy number.

2761242381 is a `hidden beast` number, since 2 + 7 + 612 + 4 + 2 + 38 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2761242381 is a prime.

It is a super-2 number, since 2×2761242381² = 15248918973261098322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2761242311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65151 + ... + 98828.

It is an arithmetic number, because the mean of its divisors is an integer number (332551440).

Almost surely, 2^2761242381 is an apocalyptic number.

It is an amenable number.

2761242381 is a deficient number, since it is larger than the sum of its proper divisors (1229374899).

2761242381 is a wasteful number, since it uses less digits than its factorization.

2761242381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165856 (or 165853 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2761242381 is about 52547.5249750167. The cubic root of 2761242381 is about 1402.9262570451.

The spelling of 2761242381 in words is "two billion, seven hundred sixty-one million, two hundred forty-two thousand, three hundred eighty-one".