9020817172 has 6 divisors (see below), whose sum is σ = 15786430058. Its totient is φ = 4510408584.

The previous prime is 9020817163. The next prime is 9020817181. The reversal of 9020817172 is 2717180209.

It is an interprime number because it is at equal distance from previous prime (9020817163) and next prime (9020817181).

It can be written as a sum of positive squares in only one way, i.e., 7772890896 + 1247926276 = 88164^2 + 35326^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127602143 + ... + 1127602150.

Almost surely, 2^9020817172 is an apocalyptic number.

It is an amenable number.

9020817172 is a deficient number, since it is larger than the sum of its proper divisors (6765612886).

9020817172 is a wasteful number, since it uses less digits than its factorization.

9020817172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255204297 (or 2255204295 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 9020817172 is about 94977.9825643817. The cubic root of 9020817172 is about 2081.6863460093.

The spelling of 9020817172 in words is "nine billion, twenty million, eight hundred seventeen thousand, one hundred seventy-two".