1913945098 has 16 divisors (see below), whose sum is σ = 3134113416. Its totient is φ = 871257600.

The previous prime is 1913945041. The next prime is 1913945113. The reversal of 1913945098 is 8905493191.

It can be written as a sum of positive squares in 4 ways, for example, as 1804805289 + 109139809 = 42483^2 + 10447^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502303 + ... + 506098.

Almost surely, 2^1913945098 is an apocalyptic number.

1913945098 is a deficient number, since it is larger than the sum of its proper divisors (1220168318).

1913945098 is a wasteful number, since it uses less digits than its factorization.

1913945098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008489.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 1913945098 is about 43748.6582422821. The cubic root of 1913945098 is about 1241.5850995851.

The spelling of 1913945098 in words is "one billion, nine hundred thirteen million, nine hundred forty-five thousand, ninety-eight".