1928314081 has 8 divisors (see below), whose sum is σ = 2020060800. Its totient is φ = 1838250960.

The previous prime is 1928314039. The next prime is 1928314099. The reversal of 1928314081 is 1804138291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1928314081 is a prime.

It is a super-2 number, since 2×1928314081² = 7436790389965749122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1928314081.

It is not an unprimeable number, because it can be changed into a prime (1928314481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418555 + ... + 423136.

It is an arithmetic number, because the mean of its divisors is an integer number (252507600).

Almost surely, 2^1928314081 is an apocalyptic number.

It is an amenable number.

1928314081 is a deficient number, since it is larger than the sum of its proper divisors (91746719).

1928314081 is an equidigital number, since it uses as much as digits as its factorization.

1928314081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841799.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1928314081 is about 43912.5731539385. The cubic root of 1928314081 is about 1244.6844317754.

The spelling of 1928314081 in words is "one billion, nine hundred twenty-eight million, three hundred fourteen thousand, eighty-one".