1804974971 has 2 divisors, whose sum is σ = 1804974972. Its totient is φ = 1804974970.

The previous prime is 1804974953. The next prime is 1804974973. The reversal of 1804974971 is 1794794081.

It is a strong prime.

It is an emirp because it is prime and its reverse (1794794081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1804974971 is a prime.

Together with 1804974973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1804974973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902487485 + 902487486.

It is an arithmetic number, because the mean of its divisors is an integer number (902487486).

Almost surely, 2^1804974971 is an apocalyptic number.

1804974971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1804974971 is an equidigital number, since it uses as much as digits as its factorization.

1804974971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 1804974971 is about 42484.9970107096. The cubic root of 1804974971 is about 1217.5600637122.

The spelling of 1804974971 in words is "one billion, eight hundred four million, nine hundred seventy-four thousand, nine hundred seventy-one".