1956802443709 has 8 divisors (see below), whose sum is σ = 1998701209728. Its totient is φ = 1914914705760.

The previous prime is 1956802443689. The next prime is 1956802443749. The reversal of 1956802443709 is 9073442086591.

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

It is not a de Polignac number, because 1956802443709 - 2²⁹ = 1956265572797 is a prime.

It is a super-2 number, since 2×1956802443709² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956802443749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397847 + ... + 3108580.

It is an arithmetic number, because the mean of its divisors is an integer number (249837651216).

It is a 1-persistent number, because it is pandigital, but 2⋅1956802443709 = 3913604887418 is not.

Almost surely, 2^{1956802443709} is an apocalyptic number.

It is an amenable number.

1956802443709 is a deficient number, since it is larger than the sum of its proper divisors (41898766019).

1956802443709 is an equidigital number, since it uses as much as digits as its factorization.

1956802443709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514035.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 1956802443709 in words is "one trillion, nine hundred fifty-six billion, eight hundred two million, four hundred forty-three thousand, seven hundred nine".