1802643672913 has 2 divisors, whose sum is σ = 1802643672914. Its totient is φ = 1802643672912.

The previous prime is 1802643672889. The next prime is 1802643672961. The reversal of 1802643672913 is 3192763462081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1715135975424 + 87507697489 = 1309632^2 + 295817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1802643672913 is a prime.

It is a super-2 number, since 2×1802643672913² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1802643676913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901321836456 + 901321836457.

It is an arithmetic number, because the mean of its divisors is an integer number (901321836457).

Almost surely, 2^{1802643672913} is an apocalyptic number.

It is an amenable number.

1802643672913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802643672913 is an equidigital number, since it uses as much as digits as its factorization.

1802643672913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 1802643672913 in words is "one trillion, eight hundred two billion, six hundred forty-three million, six hundred seventy-two thousand, nine hundred thirteen".