2278678007 has 2 divisors, whose sum is σ = 2278678008. Its totient is φ = 2278678006.

The previous prime is 2278677959. The next prime is 2278678019. The reversal of 2278678007 is 7008768722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2278678007 - 2¹² = 2278673911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278678067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139339003 + 1139339004.

It is an arithmetic number, because the mean of its divisors is an integer number (1139339004).

Almost surely, 2^2278678007 is an apocalyptic number.

2278678007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278678007 is an equidigital number, since it uses as much as digits as its factorization.

2278678007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 526848, while the sum is 47.

The square root of 2278678007 is about 47735.5004896775. The cubic root of 2278678007 is about 1315.9144428677.

The spelling of 2278678007 in words is "two billion, two hundred seventy-eight million, six hundred seventy-eight thousand, seven".