1820104051 has 2 divisors, whose sum is σ = 1820104052. Its totient is φ = 1820104050.

The previous prime is 1820104049. The next prime is 1820104151. The reversal of 1820104051 is 1504010281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1820104051 - 2¹ = 1820104049 is a prime.

It is a super-2 number, since 2×1820104051² = 6625557512933221202, which contains 22 as substring.

Together with 1820104049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1820104151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910052025 + 910052026.

It is an arithmetic number, because the mean of its divisors is an integer number (910052026).

Almost surely, 2^1820104051 is an apocalyptic number.

1820104051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1820104051 is an equidigital number, since it uses as much as digits as its factorization.

1820104051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 1820104051 is about 42662.6774945033. The cubic root of 1820104051 is about 1220.9524165010.

The spelling of 1820104051 in words is "one billion, eight hundred twenty million, one hundred four thousand, fifty-one".