1021481959 has 2 divisors, whose sum is σ = 1021481960. Its totient is φ = 1021481958.

The previous prime is 1021481953. The next prime is 1021481963. The reversal of 1021481959 is 9591841201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021481959 - 2¹³ = 1021473767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021481953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510740979 + 510740980.

It is an arithmetic number, because the mean of its divisors is an integer number (510740980).

Almost surely, 2^1021481959 is an apocalyptic number.

1021481959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021481959 is an equidigital number, since it uses as much as digits as its factorization.

1021481959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1021481959 is about 31960.6313923865. The cubic root of 1021481959 is about 1007.1099813576.

The spelling of 1021481959 in words is "one billion, twenty-one million, four hundred eighty-one thousand, nine hundred fifty-nine".