1799942000 has 40 divisors (see below), whose sum is σ = 4352264592. Its totient is φ = 719976000.

The previous prime is 1799941973. The next prime is 1799942003. The reversal of 1799942000 is 2499971.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1799942003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447986 + ... + 451985.

Almost surely, 2^1799942000 is an apocalyptic number.

1799942000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1799942000 is an abundant number, since it is smaller than the sum of its proper divisors (2552322592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1799942000 is an equidigital number, since it uses as much as digits as its factorization.

1799942000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899994 (or 899978 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 1799942000 is about 42425.7233291313. The cubic root of 1799942000 is about 1216.4273335034.

The spelling of 1799942000 in words is "one billion, seven hundred ninety-nine million, nine hundred forty-two thousand".