3185134969 has 3 divisors (see below), whose sum is σ = 3185191407. Its totient is φ = 3185078532.

The previous prime is 3185134961. The next prime is 3185134993. The reversal of 3185134969 is 9694315813.

The square root of 3185134969 is 56437.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2816955625 + 368179344 = 53075^2 + 19188^2 .

It is not a de Polignac number, because 3185134969 - 2³ = 3185134961 is a prime.

It is a super-2 number, since 2×3185134969² = 20290169541493261922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3185134961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 28219 + ... + 84655.

It is an arithmetic number, because the mean of its divisors is an integer number (1061730469).

Almost surely, 2^3185134969 is an apocalyptic number.

3185134969 is the 56437-th square number.

3185134969 is the 28219-th centered octagonal number.

It is an amenable number.

3185134969 is a deficient number, since it is larger than the sum of its proper divisors (56438).

3185134969 is an frugal number, since it uses more digits than its factorization.

3185134969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112874 (or 56437 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The cubic root of 3185134969 is about 1471.3272553067.

Multiplying 3185134969 by its sum of digits (49), we get a square (156071613481 = 395059²).

The spelling of 3185134969 in words is "three billion, one hundred eighty-five million, one hundred thirty-four thousand, nine hundred sixty-nine".