1956989966207 has 2 divisors, whose sum is σ = 1956989966208. Its totient is φ = 1956989966206.

The previous prime is 1956989966201. The next prime is 1956989966249. The reversal of 1956989966207 is 7026699896591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1956989966207 - 2³⁴ = 1939810097023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1956989966201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978494983103 + 978494983104.

It is an arithmetic number, because the mean of its divisors is an integer number (978494983104).

Almost surely, 2^{1956989966207} is an apocalyptic number.

1956989966207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956989966207 is an equidigital number, since it uses as much as digits as its factorization.

1956989966207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793618560, while the sum is 77.

The spelling of 1956989966207 in words is "one trillion, nine hundred fifty-six billion, nine hundred eighty-nine million, nine hundred sixty-six thousand, two hundred seven".