10202870549 has 2 divisors, whose sum is σ = 10202870550. Its totient is φ = 10202870548.

The previous prime is 10202870527. The next prime is 10202870651. The reversal of 10202870549 is 94507820201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9315724324 + 887146225 = 96518^2 + 29785^2 .

It is an emirp because it is prime and its reverse (94507820201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202870549 is a prime.

It is a super-3 number, since 3×10202870549³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202870519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101435274 + 5101435275.

It is an arithmetic number, because the mean of its divisors is an integer number (5101435275).

Almost surely, 2^10202870549 is an apocalyptic number.

It is an amenable number.

10202870549 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202870549 is an equidigital number, since it uses as much as digits as its factorization.

10202870549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 10202870549 in words is "ten billion, two hundred two million, eight hundred seventy thousand, five hundred forty-nine".