1985240299 has 4 divisors (see below), whose sum is σ = 2268846064. Its totient is φ = 1701634536.

The previous prime is 1985240293. The next prime is 1985240311. The reversal of 1985240299 is 9920425891.

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

It is not a de Polignac number, because 1985240299 - 2⁷ = 1985240171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1985240293) 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, 141802872 + ... + 141802885.

It is an arithmetic number, because the mean of its divisors is an integer number (567211516).

Almost surely, 2^1985240299 is an apocalyptic number.

1985240299 is a deficient number, since it is larger than the sum of its proper divisors (283605765).

1985240299 is an equidigital number, since it uses as much as digits as its factorization.

1985240299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283605764.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 1985240299 is about 44556.0354946443. The cubic root of 1985240299 is about 1256.8140512555.

The spelling of 1985240299 in words is "one billion, nine hundred eighty-five million, two hundred forty thousand, two hundred ninety-nine".