2978614091 has 2 divisors, whose sum is σ = 2978614092. Its totient is φ = 2978614090.

The previous prime is 2978614087. The next prime is 2978614117. The reversal of 2978614091 is 1904168792.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2978614091 - 2² = 2978614087 is a prime.

It is not a weakly prime, because it can be changed into another prime (2978614031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489307045 + 1489307046.

It is an arithmetic number, because the mean of its divisors is an integer number (1489307046).

Almost surely, 2^2978614091 is an apocalyptic number.

2978614091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2978614091 is an equidigital number, since it uses as much as digits as its factorization.

2978614091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 2978614091 is about 54576.6808353165. The cubic root of 2978614091 is about 1438.8143035111.

The spelling of 2978614091 in words is "two billion, nine hundred seventy-eight million, six hundred fourteen thousand, ninety-one".