1920313998 has 24 divisors (see below), whose sum is σ = 4167626736. Its totient is φ = 639036000.

The previous prime is 1920313987. The next prime is 1920314029. The reversal of 1920313998 is 8993130291.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77938 + ... + 99573.

It is an arithmetic number, because the mean of its divisors is an integer number (173651114).

Almost surely, 2^1920313998 is an apocalyptic number.

1920313998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1920313998 is an abundant number, since it is smaller than the sum of its proper divisors (2247312738).

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

1920313998 is a wasteful number, since it uses less digits than its factorization.

1920313998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178120 (or 178117 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1920313998 is about 43821.3874495092. The cubic root of 1920313998 is about 1242.9607531878.

The spelling of 1920313998 in words is "one billion, nine hundred twenty million, three hundred thirteen thousand, nine hundred ninety-eight".