1996164545 has 4 divisors (see below), whose sum is σ = 2395397460. Its totient is φ = 1596931632.

The previous prime is 1996164517. The next prime is 1996164551. The reversal of 1996164545 is 5454616991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1052937601 + 943226944 = 32449^2 + 30712^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996164545 - 2¹⁸ = 1995902401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1996164493 and 1996164502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199616450 + ... + 199616459.

It is an arithmetic number, because the mean of its divisors is an integer number (598849365).

Almost surely, 2^1996164545 is an apocalyptic number.

It is an amenable number.

1996164545 is a deficient number, since it is larger than the sum of its proper divisors (399232915).

1996164545 is an equidigital number, since it uses as much as digits as its factorization.

1996164545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399232914.

The product of its digits is 1166400, while the sum is 50.

The square root of 1996164545 is about 44678.4572808865. The cubic root of 1996164545 is about 1259.1151394212.

The spelling of 1996164545 in words is "one billion, nine hundred ninety-six million, one hundred sixty-four thousand, five hundred forty-five".