1928961043 has 2 divisors, whose sum is σ = 1928961044. Its totient is φ = 1928961042.

The previous prime is 1928961029. The next prime is 1928961077. The reversal of 1928961043 is 3401698291.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1928961043 - 2¹⁷ = 1928829971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1928961743) by changing a digit.

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 as a sum of consecutive naturals, namely, 964480521 + 964480522.

It is an arithmetic number, because the mean of its divisors is an integer number (964480522).

Almost surely, 2^1928961043 is an apocalyptic number.

1928961043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928961043 is an equidigital number, since it uses as much as digits as its factorization.

1928961043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1928961043 is about 43919.9390140742. The cubic root of 1928961043 is about 1244.8236161363.

The spelling of 1928961043 in words is "one billion, nine hundred twenty-eight million, nine hundred sixty-one thousand, forty-three".