1898834890 has 16 divisors (see below), whose sum is σ = 3618956232. Its totient is φ = 714855424.

The previous prime is 1898834881. The next prime is 1898834911. The reversal of 1898834890 is 984388981.

It can be written as a sum of positive squares in 4 ways, for example, as 1567922409 + 330912481 = 39597^2 + 18191^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5584639 + ... + 5584978.

Almost surely, 2^1898834890 is an apocalyptic number.

1898834890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1898834890 is a deficient number, since it is larger than the sum of its proper divisors (1720121342).

1898834890 is a wasteful number, since it uses less digits than its factorization.

1898834890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11169641.

The product of its (nonzero) digits is 3981312, while the sum is 58.

The square root of 1898834890 is about 43575.6226576282. The cubic root of 1898834890 is about 1238.3091092046.

The spelling of 1898834890 in words is "one billion, eight hundred ninety-eight million, eight hundred thirty-four thousand, eight hundred ninety".