160930147921 has 3 divisors (see below), whose sum is σ = 160930549083. Its totient is φ = 160929746760.

The previous prime is 160930147891. The next prime is 160930147933. The reversal of 160930147921 is 129741039061.

The square root of 160930147921 is 401161.

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

160930147921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 33138197521 + 127791950400 = 182039^2 + 357480^2 .

It is not a de Polignac number, because 160930147921 - 2⁹ = 160930147409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160930147621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 200581 + ... + 601741.

It is an arithmetic number, because the mean of its divisors is an integer number (53643516361).

Almost surely, 2^160930147921 is an apocalyptic number.

160930147921 is the 401161-st square number.

160930147921 is the 200581-st centered octagonal number.

It is an amenable number.

160930147921 is a deficient number, since it is larger than the sum of its proper divisors (401162).

160930147921 is an frugal number, since it uses more digits than its factorization.

160930147921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802322 (or 401161 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 160930147921 in words is "one hundred sixty billion, nine hundred thirty million, one hundred forty-seven thousand, nine hundred twenty-one".