2378218274899 has 2 divisors, whose sum is σ = 2378218274900. Its totient is φ = 2378218274898.

The previous prime is 2378218274807. The next prime is 2378218274917. The reversal of 2378218274899 is 9984728128732.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2378218274899 - 2¹⁵ = 2378218242131 is a prime.

It is not a weakly prime, because it can be changed into another prime (2378218271899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1189109137449 + 1189109137450.

It is an arithmetic number, because the mean of its divisors is an integer number (1189109137450).

Almost surely, 2^{2378218274899} is an apocalyptic number.

2378218274899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2378218274899 is an equidigital number, since it uses as much as digits as its factorization.

2378218274899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 195084288, while the sum is 70.

The spelling of 2378218274899 in words is "two trillion, three hundred seventy-eight billion, two hundred eighteen million, two hundred seventy-four thousand, eight hundred ninety-nine".