1864216192801 has 2 divisors, whose sum is σ = 1864216192802. Its totient is φ = 1864216192800.

The previous prime is 1864216192733. The next prime is 1864216192829. The reversal of 1864216192801 is 1082916124681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1318684755600 + 545531437201 = 1148340^2 + 738601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864216192801 - 2⁷ = 1864216192673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1864216192841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932108096400 + 932108096401.

It is an arithmetic number, because the mean of its divisors is an integer number (932108096401).

Almost surely, 2^{1864216192801} is an apocalyptic number.

It is an amenable number.

1864216192801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864216192801 is an equidigital number, since it uses as much as digits as its factorization.

1864216192801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 49.

The spelling of 1864216192801 in words is "one trillion, eight hundred sixty-four billion, two hundred sixteen million, one hundred ninety-two thousand, eight hundred one".