1098181914971 has 2 divisors, whose sum is σ = 1098181914972. Its totient is φ = 1098181914970.

The previous prime is 1098181914959. The next prime is 1098181914997. The reversal of 1098181914971 is 1794191818901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1098181914971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1098181914971.

It is not a weakly prime, because it can be changed into another prime (1098181914931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549090957485 + 549090957486.

It is an arithmetic number, because the mean of its divisors is an integer number (549090957486).

Almost surely, 2^{1098181914971} is an apocalyptic number.

1098181914971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098181914971 is an equidigital number, since it uses as much as digits as its factorization.

1098181914971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 59.

The spelling of 1098181914971 in words is "one trillion, ninety-eight billion, one hundred eighty-one million, nine hundred fourteen thousand, nine hundred seventy-one".