1913281898 has 16 divisors (see below), whose sum is σ = 3314991744. Its totient is φ = 818516160.

The previous prime is 1913281859. The next prime is 1913281939. The reversal of 1913281898 is 8981823191.

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, 2557490 + ... + 2558237.

It is an arithmetic number, because the mean of its divisors is an integer number (207186984).

Almost surely, 2^1913281898 is an apocalyptic number.

1913281898 is a deficient number, since it is larger than the sum of its proper divisors (1401709846).

1913281898 is a wasteful number, since it uses less digits than its factorization.

1913281898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115757.

The product of its digits is 248832, while the sum is 50.

The square root of 1913281898 is about 43741.0779245322. The cubic root of 1913281898 is about 1241.4416760416.

The spelling of 1913281898 in words is "one billion, nine hundred thirteen million, two hundred eighty-one thousand, eight hundred ninety-eight".