2967691381 has 4 divisors (see below), whose sum is σ = 3023685612. Its totient is φ = 2911697152.

The previous prime is 2967691361. The next prime is 2967691393. The reversal of 2967691381 is 1831967692.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1473868881 + 1493822500 = 38391^2 + 38650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2967691381 is a prime.

It is a super-2 number, since 2×2967691381² = 17614384265723374322, 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 (2967691351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27997036 + ... + 27997141.

It is an arithmetic number, because the mean of its divisors is an integer number (755921403).

Almost surely, 2^2967691381 is an apocalyptic number.

It is an amenable number.

2967691381 is a deficient number, since it is larger than the sum of its proper divisors (55994231).

2967691381 is an equidigital number, since it uses as much as digits as its factorization.

2967691381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55994230.

The product of its digits is 979776, while the sum is 52.

The square root of 2967691381 is about 54476.5213738910. The cubic root of 2967691381 is about 1437.0534173796.

The spelling of 2967691381 in words is "two billion, nine hundred sixty-seven million, six hundred ninety-one thousand, three hundred eighty-one".