1992855999 has 8 divisors (see below), whose sum is σ = 2772669312. Its totient is φ = 1270806680.

The previous prime is 1992855929. The next prime is 1992856009. The reversal of 1992855999 is 9995582991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1992855999 - 2¹³ = 1992847807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992855929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14440917 + ... + 14441054.

It is an arithmetic number, because the mean of its divisors is an integer number (346583664).

Almost surely, 2^1992855999 is an apocalyptic number.

1992855999 is a deficient number, since it is larger than the sum of its proper divisors (779813313).

1992855999 is a wasteful number, since it uses less digits than its factorization.

1992855999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28881997.

The product of its digits is 23619600, while the sum is 66.

The square root of 1992855999 is about 44641.4157369589. The cubic root of 1992855999 is about 1258.4191139608.

The spelling of 1992855999 in words is "one billion, nine hundred ninety-two million, eight hundred fifty-five thousand, nine hundred ninety-nine".