202164508538 has 8 divisors (see below), whose sum is σ = 321084807732. Its totient is φ = 95136239296.

The previous prime is 202164508499. The next prime is 202164508541. The reversal of 202164508538 is 835805461202.

It can be written as a sum of positive squares in 2 ways, for example, as 194019987529 + 8144521009 = 440477^2 + 90247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×202164508538² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973007445 + ... + 2973007512.

Almost surely, 2^202164508538 is an apocalyptic number.

202164508538 is a deficient number, since it is larger than the sum of its proper divisors (118920299194).

202164508538 is a wasteful number, since it uses less digits than its factorization.

202164508538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946014976.

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 202164508538 in words is "two hundred two billion, one hundred sixty-four million, five hundred eight thousand, five hundred thirty-eight".