1660842799 has 24 divisors (see below), whose sum is σ = 2112739200. Its totient is φ = 1291031280.

The previous prime is 1660842797. The next prime is 1660842817. The reversal of 1660842799 is 9972480661.

It is a happy number.

It is not a de Polignac number, because 1660842799 - 2¹ = 1660842797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660842797) 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, 233112 + ... + 240130.

It is an arithmetic number, because the mean of its divisors is an integer number (88030800).

Almost surely, 2^1660842799 is an apocalyptic number.

1660842799 is a deficient number, since it is larger than the sum of its proper divisors (451896401).

1660842799 is a wasteful number, since it uses less digits than its factorization.

1660842799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483 (or 7476 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 1660842799 is about 40753.4391064116. The cubic root of 1660842799 is about 1184.2484980968.

The spelling of 1660842799 in words is "one billion, six hundred sixty million, eight hundred forty-two thousand, seven hundred ninety-nine".