1956989966293 has 4 divisors (see below), whose sum is σ = 1957007753568. Its totient is φ = 1956972179020.

The previous prime is 1956989966287. The next prime is 1956989966303. The reversal of 1956989966293 is 3926699896591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1956989966293 - 2³³ = 1948400031701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956989966273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8727571 + ... + 8948992.

It is an arithmetic number, because the mean of its divisors is an integer number (489251938392).

Almost surely, 2^{1956989966293} is an apocalyptic number.

It is an amenable number.

1956989966293 is a deficient number, since it is larger than the sum of its proper divisors (17787275).

1956989966293 is a wasteful number, since it uses less digits than its factorization.

1956989966293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787274.

The product of its digits is 3061100160, while the sum is 82.

The spelling of 1956989966293 in words is "one trillion, nine hundred fifty-six billion, nine hundred eighty-nine million, nine hundred sixty-six thousand, two hundred ninety-three".