10642445189 has 2 divisors, whose sum is σ = 10642445190. Its totient is φ = 10642445188.

The previous prime is 10642445147. The next prime is 10642445221. The reversal of 10642445189 is 98154424601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9359014564 + 1283430625 = 96742^2 + 35825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10642445189 is a prime.

It is a super-2 number, since 2×10642445189² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10542445189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321222594 + 5321222595.

It is an arithmetic number, because the mean of its divisors is an integer number (5321222595).

Almost surely, 2^10642445189 is an apocalyptic number.

It is an amenable number.

10642445189 is a deficient number, since it is larger than the sum of its proper divisors (1).

10642445189 is an equidigital number, since it uses as much as digits as its factorization.

10642445189 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 44.

The spelling of 10642445189 in words is "ten billion, six hundred forty-two million, four hundred forty-five thousand, one hundred eighty-nine".