2278167901 has 2 divisors, whose sum is σ = 2278167902. Its totient is φ = 2278167900.

The previous prime is 2278167889. The next prime is 2278167919. The reversal of 2278167901 is 1097618722.

2278167901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1318779225 + 959388676 = 36315^2 + 30974^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278167901 - 2⁵ = 2278167869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278167601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139083950 + 1139083951.

It is an arithmetic number, because the mean of its divisors is an integer number (1139083951).

Almost surely, 2^2278167901 is an apocalyptic number.

It is an amenable number.

2278167901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278167901 is an equidigital number, since it uses as much as digits as its factorization.

2278167901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 2278167901 is about 47730.1571440950. The cubic root of 2278167901 is about 1315.8162417841.

The spelling of 2278167901 in words is "two billion, two hundred seventy-eight million, one hundred sixty-seven thousand, nine hundred one".