1964815084087 has 2 divisors, whose sum is σ = 1964815084088. Its totient is φ = 1964815084086.

The previous prime is 1964815084061. The next prime is 1964815084093. The reversal of 1964815084087 is 7804805184691.

It is a strong prime.

It is an emirp because it is prime and its reverse (7804805184691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1964815084087 - 2³⁹ = 1415059270199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964815084387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982407542043 + 982407542044.

It is an arithmetic number, because the mean of its divisors is an integer number (982407542044).

Almost surely, 2^{1964815084087} is an apocalyptic number.

1964815084087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964815084087 is an equidigital number, since it uses as much as digits as its factorization.

1964815084087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15482880, while the sum is 61.

The spelling of 1964815084087 in words is "one trillion, nine hundred sixty-four billion, eight hundred fifteen million, eighty-four thousand, eighty-seven".