1646368963 has 2 divisors, whose sum is σ = 1646368964. Its totient is φ = 1646368962.

The previous prime is 1646368939. The next prime is 1646368967. The reversal of 1646368963 is 3698636461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1646368963 - 2⁵ = 1646368931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1646368963.

It is not a weakly prime, because it can be changed into another prime (1646368967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 823184481 + 823184482.

It is an arithmetic number, because the mean of its divisors is an integer number (823184482).

Almost surely, 2^1646368963 is an apocalyptic number.

1646368963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1646368963 is an equidigital number, since it uses as much as digits as its factorization.

1646368963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 52.

The square root of 1646368963 is about 40575.4724310143. The cubic root of 1646368963 is about 1180.7983114156.

The spelling of 1646368963 in words is "one billion, six hundred forty-six million, three hundred sixty-eight thousand, nine hundred sixty-three".