1023445987 has 2 divisors, whose sum is σ = 1023445988. Its totient is φ = 1023445986.

The previous prime is 1023445981. The next prime is 1023445991. The reversal of 1023445987 is 7895443201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023445987 - 2¹⁹ = 1022921699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023445981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511722993 + 511722994.

It is an arithmetic number, because the mean of its divisors is an integer number (511722994).

Almost surely, 2^1023445987 is an apocalyptic number.

1023445987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023445987 is an equidigital number, since it uses as much as digits as its factorization.

1023445987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1023445987 is about 31991.3423757116. The cubic root of 1023445987 is about 1007.7550329992.

The spelling of 1023445987 in words is "one billion, twenty-three million, four hundred forty-five thousand, nine hundred eighty-seven".