202754672989 has 4 divisors (see below), whose sum is σ = 221186916000. Its totient is φ = 184322429980.

The previous prime is 202754672987. The next prime is 202754673047. The reversal of 202754672989 is 989276457202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202754672989 - 2¹ = 202754672987 is a prime.

It is a super-2 number, since 2×202754672989² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202754672987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9216121489 + ... + 9216121510.

It is an arithmetic number, because the mean of its divisors is an integer number (55296729000).

Almost surely, 2^202754672989 is an apocalyptic number.

It is an amenable number.

202754672989 is a deficient number, since it is larger than the sum of its proper divisors (18432243011).

202754672989 is a wasteful number, since it uses less digits than its factorization.

202754672989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18432243010.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 202754672989 in words is "two hundred two billion, seven hundred fifty-four million, six hundred seventy-two thousand, nine hundred eighty-nine".