2678023691 has 32 divisors (see below), whose sum is σ = 3256221696. Its totient is φ = 2153952000.

The previous prime is 2678023687. The next prime is 2678023693. The reversal of 2678023691 is 1963208762.

It is a cyclic number.

It is not a de Polignac number, because 2678023691 - 2² = 2678023687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2678023693) 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 31 ways as a sum of consecutive naturals, for example, 1609526 + ... + 1611188.

It is an arithmetic number, because the mean of its divisors is an integer number (101756928).

Almost surely, 2^2678023691 is an apocalyptic number.

2678023691 is a deficient number, since it is larger than the sum of its proper divisors (578198005).

2678023691 is a wasteful number, since it uses less digits than its factorization.

2678023691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2678023691 is about 51749.6250324580. The cubic root of 2678023691 is about 1388.6883907885.

The spelling of 2678023691 in words is "two billion, six hundred seventy-eight million, twenty-three thousand, six hundred ninety-one".