30495986161 has 3 divisors (see below), whose sum is σ = 30496160793. Its totient is φ = 30495811530.

The previous prime is 30495986153. The next prime is 30495986207. The reversal of 30495986161 is 16168959403.

The square root of 30495986161 is 174631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16168959403 = 17 ⋅951115259.

It is not a de Polignac number, because 30495986161 - 2³ = 30495986153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30495986099 and 30495986108.

It is not an unprimeable number, because it can be changed into a prime (30495986761) 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, 87316 + ... + 261946.

It is an arithmetic number, because the mean of its divisors is an integer number (10165386931).

Almost surely, 2^30495986161 is an apocalyptic number.

30495986161 is the 174631-st square number.

30495986161 is the 87316-th centered octagonal number.

It is an amenable number.

30495986161 is a deficient number, since it is larger than the sum of its proper divisors (174632).

30495986161 is an frugal number, since it uses more digits than its factorization.

30495986161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349262 (or 174631 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 30495986161 in words is "thirty billion, four hundred ninety-five million, nine hundred eighty-six thousand, one hundred sixty-one".