1591230198 has 16 divisors (see below), whose sum is σ = 3185506800. Its totient is φ = 529902336.

The previous prime is 1591230163. The next prime is 1591230227. The reversal of 1591230198 is 8910321951.

It is a Curzon number.

It is a congruent number.

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, 120115 + ... + 132702.

It is an arithmetic number, because the mean of its divisors is an integer number (199094175).

Almost surely, 2^1591230198 is an apocalyptic number.

1591230198 is an abundant number, since it is smaller than the sum of its proper divisors (1594276602).

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

1591230198 is a wasteful number, since it uses less digits than its factorization.

1591230198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253871.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 1591230198 is about 39890.2268481893. The cubic root of 1591230198 is about 1167.4662577235.

The spelling of 1591230198 in words is "one billion, five hundred ninety-one million, two hundred thirty thousand, one hundred ninety-eight".