1662204117 has 24 divisors (see below), whose sum is σ = 2596692000. Its totient is φ = 942986016.

The previous prime is 1662204101. The next prime is 1662204119. The reversal of 1662204117 is 7114022661.

It is not a de Polignac number, because 1662204117 - 2⁴ = 1662204101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662204119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20242 + ... + 61107.

It is an arithmetic number, because the mean of its divisors is an integer number (108195500).

Almost surely, 2^1662204117 is an apocalyptic number.

It is an amenable number.

1662204117 is a deficient number, since it is larger than the sum of its proper divisors (934487883).

1662204117 is a wasteful number, since it uses less digits than its factorization.

1662204117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81505 (or 81498 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1662204117 is about 40770.1375641535. The cubic root of 1662204117 is about 1184.5719681111.

Adding to 1662204117 its reverse (7114022661), we get a palindrome (8776226778).

The spelling of 1662204117 in words is "one billion, six hundred sixty-two million, two hundred four thousand, one hundred seventeen".