1868642053 has 2 divisors, whose sum is σ = 1868642054. Its totient is φ = 1868642052.

The previous prime is 1868642003. The next prime is 1868642093. The reversal of 1868642053 is 3502468681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1110355684 + 758286369 = 33322^2 + 27537^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868642053 - 2¹³ = 1868633861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868642003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934321026 + 934321027.

It is an arithmetic number, because the mean of its divisors is an integer number (934321027).

Almost surely, 2^1868642053 is an apocalyptic number.

It is an amenable number.

1868642053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868642053 is an equidigital number, since it uses as much as digits as its factorization.

1868642053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 1868642053 is about 43227.7925992064. The cubic root of 1868642053 is about 1231.7106769604.

The spelling of 1868642053 in words is "one billion, eight hundred sixty-eight million, six hundred forty-two thousand, fifty-three".