1899087104 has 18 divisors (see below), whose sum is σ = 3790756410. Its totient is φ = 949543424.

The previous prime is 1899087101. The next prime is 1899087121. The reversal of 1899087104 is 4017809981.

It can be written as a sum of positive squares in only one way, i.e., 1896776704 + 2310400 = 43552^2 + 1520^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899087101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3708899 + ... + 3709410.

Almost surely, 2^1899087104 is an apocalyptic number.

It is an amenable number.

1899087104 is a deficient number, since it is larger than the sum of its proper divisors (1891669306).

1899087104 is an frugal number, since it uses more digits than its factorization.

1899087104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7418325 (or 7418311 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1899087104 is about 43578.5165419843. The cubic root of 1899087104 is about 1238.3639331861.

The spelling of 1899087104 in words is "one billion, eight hundred ninety-nine million, eighty-seven thousand, one hundred four".