1920853919 has 4 divisors (see below), whose sum is σ = 2033845344. Its totient is φ = 1807862496.

The previous prime is 1920853897. The next prime is 1920853943. The reversal of 1920853919 is 9193580291.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1920853919 - 2⁸ = 1920853663 is a prime.

It is a super-2 number, since 2×1920853919² = 7379359556275317122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920853969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56495687 + ... + 56495720.

It is an arithmetic number, because the mean of its divisors is an integer number (508461336).

Almost surely, 2^1920853919 is an apocalyptic number.

1920853919 is a deficient number, since it is larger than the sum of its proper divisors (112991425).

1920853919 is a wasteful number, since it uses less digits than its factorization.

1920853919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112991424.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 1920853919 is about 43827.5474901346. The cubic root of 1920853919 is about 1243.0772337438.

The spelling of 1920853919 in words is "one billion, nine hundred twenty million, eight hundred fifty-three thousand, nine hundred nineteen".