1928923361 has 2 divisors, whose sum is σ = 1928923362. Its totient is φ = 1928923360.

The previous prime is 1928923357. The next prime is 1928923391. The reversal of 1928923361 is 1633298291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1483713361 + 445210000 = 38519^2 + 21100^2 .

It is an emirp because it is prime and its reverse (1633298291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1928923361 - 2² = 1928923357 is a prime.

It is a super-2 number, since 2×1928923361² = 7441490665223072642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1928923391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964461680 + 964461681.

It is an arithmetic number, because the mean of its divisors is an integer number (964461681).

Almost surely, 2^1928923361 is an apocalyptic number.

It is an amenable number.

1928923361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928923361 is an equidigital number, since it uses as much as digits as its factorization.

1928923361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 1928923361 is about 43919.5100268662. The cubic root of 1928923361 is about 1244.8155102617.

The spelling of 1928923361 in words is "one billion, nine hundred twenty-eight million, nine hundred twenty-three thousand, three hundred sixty-one".