200010001990 has 32 divisors (see below), whose sum is σ = 379008159840. Its totient is φ = 75784896000.

The previous prime is 200010001981. The next prime is 200010001991. The reversal of 200010001990 is 99100010002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200010001991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1828030 + ... + 1934350.

It is an arithmetic number, because the mean of its divisors is an integer number (11844004995).

Almost surely, 2^200010001990 is an apocalyptic number.

200010001990 is a deficient number, since it is larger than the sum of its proper divisors (178998157850).

200010001990 is a wasteful number, since it uses less digits than its factorization.

200010001990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116248.

The product of its (nonzero) digits is 162, while the sum is 22.

Adding to 200010001990 its reverse (99100010002), we get a palindrome (299110011992).

The spelling of 200010001990 in words is "two hundred billion, ten million, one thousand, nine hundred ninety".