1662802099 has 4 divisors (see below), whose sum is σ = 1900345264. Its totient is φ = 1425258936.

The previous prime is 1662802091. The next prime is 1662802121. The reversal of 1662802099 is 9902082661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9902082661 = 48883 ⋅202567.

It is a cyclic number.

It is not a de Polignac number, because 1662802099 - 2³ = 1662802091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662802091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118771572 + ... + 118771585.

It is an arithmetic number, because the mean of its divisors is an integer number (475086316).

Almost surely, 2^1662802099 is an apocalyptic number.

1662802099 is a deficient number, since it is larger than the sum of its proper divisors (237543165).

1662802099 is an equidigital number, since it uses as much as digits as its factorization.

1662802099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237543164.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1662802099 is about 40777.4704830989. The cubic root of 1662802099 is about 1184.7140019685.

The spelling of 1662802099 in words is "one billion, six hundred sixty-two million, eight hundred two thousand, ninety-nine".