1920468659 has 4 divisors (see below), whose sum is σ = 1967309400. Its totient is φ = 1873627920.

The previous prime is 1920468629. The next prime is 1920468661. The reversal of 1920468659 is 9568640291.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1920468659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1920468629) 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, 23420309 + ... + 23420390.

It is an arithmetic number, because the mean of its divisors is an integer number (491827350).

Almost surely, 2^1920468659 is an apocalyptic number.

1920468659 is a deficient number, since it is larger than the sum of its proper divisors (46840741).

1920468659 is an equidigital number, since it uses as much as digits as its factorization.

1920468659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46840740.

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 1920468659 is about 43823.1520888217. The cubic root of 1920468659 is about 1242.9941214100.

The spelling of 1920468659 in words is "one billion, nine hundred twenty million, four hundred sixty-eight thousand, six hundred fifty-nine".