1964655161 has 8 divisors (see below), whose sum is σ = 2256604800. Its totient is φ = 1675526688.

The previous prime is 1964655151. The next prime is 1964655191. The reversal of 1964655161 is 1615564691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1964655161 - 2¹⁰ = 1964654137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1964655151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703796 + ... + 706581.

It is an arithmetic number, because the mean of its divisors is an integer number (282075600).

Almost surely, 2^1964655161 is an apocalyptic number.

It is an amenable number.

1964655161 is a deficient number, since it is larger than the sum of its proper divisors (291949639).

1964655161 is a wasteful number, since it uses less digits than its factorization.

1964655161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410583.

The product of its digits is 194400, while the sum is 44.

The square root of 1964655161 is about 44324.4307464856. The cubic root of 1964655161 is about 1252.4549431271.

The spelling of 1964655161 in words is "one billion, nine hundred sixty-four million, six hundred fifty-five thousand, one hundred sixty-one".