1921593059 has 2 divisors, whose sum is σ = 1921593060. Its totient is φ = 1921593058.

The previous prime is 1921593017. The next prime is 1921593071. The reversal of 1921593059 is 9503951291.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1921593059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1921593659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960796529 + 960796530.

It is an arithmetic number, because the mean of its divisors is an integer number (960796530).

Almost surely, 2^1921593059 is an apocalyptic number.

1921593059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1921593059 is an equidigital number, since it uses as much as digits as its factorization.

1921593059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 1921593059 is about 43835.9790468971. The cubic root of 1921593059 is about 1243.2366576804.

The spelling of 1921593059 in words is "one billion, nine hundred twenty-one million, five hundred ninety-three thousand, fifty-nine".