1956814895045 has 8 divisors (see below), whose sum is σ = 2348792442360. Its totient is φ = 1565042203840.

The previous prime is 1956814895041. The next prime is 1956814895047. The reversal of 1956814895045 is 5405984186591.

It is a Cunningham number, because it is equal to 1398862²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 704454705124 + 1252360189921 = 839318^2 + 1119089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1956814895045 - 2² = 1956814895041 is a prime.

It is a super-3 number, since 3×1956814895045³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956814895041) 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 7 ways as a sum of consecutive naturals, for example, 51193010 + ... + 51231219.

It is an arithmetic number, because the mean of its divisors is an integer number (293599055295).

Almost surely, 2^{1956814895045} is an apocalyptic number.

It is an amenable number.

1956814895045 is a deficient number, since it is larger than the sum of its proper divisors (391977547315).

1956814895045 is a wasteful number, since it uses less digits than its factorization.

1956814895045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102428055.

The product of its (nonzero) digits is 62208000, while the sum is 65.

The spelling of 1956814895045 in words is "one trillion, nine hundred fifty-six billion, eight hundred fourteen million, eight hundred ninety-five thousand, forty-five".