1638054059 has 2 divisors, whose sum is σ = 1638054060. Its totient is φ = 1638054058.

The previous prime is 1638054029. The next prime is 1638054097. The reversal of 1638054059 is 9504508361.

It is a weak prime.

It is an emirp because it is prime and its reverse (9504508361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1638054059 - 2⁸ = 1638053803 is a prime.

It is a super-2 number, since 2×1638054059² = 5366442200412750962, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1638054029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 819027029 + 819027030.

It is an arithmetic number, because the mean of its divisors is an integer number (819027030).

Almost surely, 2^1638054059 is an apocalyptic number.

1638054059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1638054059 is an equidigital number, since it uses as much as digits as its factorization.

1638054059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 1638054059 is about 40472.8805374661. The cubic root of 1638054059 is about 1178.8071012283.

The spelling of 1638054059 in words is "one billion, six hundred thirty-eight million, fifty-four thousand, fifty-nine".