1898141243 has 2 divisors, whose sum is σ = 1898141244. Its totient is φ = 1898141242.

The previous prime is 1898141183. The next prime is 1898141269. The reversal of 1898141243 is 3421418981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1898141243 - 2¹² = 1898137147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1898141243.

It is not a weakly prime, because it can be changed into another prime (1898141293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949070621 + 949070622.

It is an arithmetic number, because the mean of its divisors is an integer number (949070622).

Almost surely, 2^1898141243 is an apocalyptic number.

1898141243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898141243 is an equidigital number, since it uses as much as digits as its factorization.

1898141243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The square root of 1898141243 is about 43567.6628131462. The cubic root of 1898141243 is about 1238.1583054993.

The spelling of 1898141243 in words is "one billion, eight hundred ninety-eight million, one hundred forty-one thousand, two hundred forty-three".