1999104190 has 32 divisors (see below), whose sum is σ = 3790235520. Its totient is φ = 757063584.

The previous prime is 1999104181. The next prime is 1999104193. The reversal of 1999104190 is 914019991.

It is a super-2 number, since 2×1999104190² = 7992835124951112200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999104193) 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, 443689 + ... + 448171.

It is an arithmetic number, because the mean of its divisors is an integer number (118444860).

Almost surely, 2^1999104190 is an apocalyptic number.

1999104190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1999104190 is a deficient number, since it is larger than the sum of its proper divisors (1791131330).

1999104190 is a wasteful number, since it uses less digits than its factorization.

1999104190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6856.

The product of its (nonzero) digits is 26244, while the sum is 43.

The square root of 1999104190 is about 44711.3429679763. The cubic root of 1999104190 is about 1259.7329134904.

The spelling of 1999104190 in words is "one billion, nine hundred ninety-nine million, one hundred four thousand, one hundred ninety".