2991878067 has 8 divisors (see below), whose sum is σ = 3992582080. Its totient is φ = 1992879720.

The previous prime is 2991878051. The next prime is 2991878101. The reversal of 2991878067 is 7608781992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2991878067 - 2⁴ = 2991878051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2991877998 and 2991878016.

It is not an unprimeable number, because it can be changed into a prime (2991878027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422317 + ... + 429342.

It is an arithmetic number, because the mean of its divisors is an integer number (499072760).

Almost surely, 2^2991878067 is an apocalyptic number.

2991878067 is a deficient number, since it is larger than the sum of its proper divisors (1000704013).

2991878067 is a wasteful number, since it uses less digits than its factorization.

2991878067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852833.

The product of its (nonzero) digits is 3048192, while the sum is 57.

The square root of 2991878067 is about 54698.0627353474. The cubic root of 2991878067 is about 1440.9468546048.

The spelling of 2991878067 in words is "two billion, nine hundred ninety-one million, eight hundred seventy-eight thousand, sixty-seven".