1956335161 has 8 divisors (see below), whose sum is σ = 2153764800. Its totient is φ = 1762169040.

The previous prime is 1956335137. The next prime is 1956335243. The reversal of 1956335161 is 1615336591.

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

It is a cyclic number.

It is not a de Polignac number, because 1956335161 - 2²⁵ = 1922780729 is a prime.

It is a super-3 number, since 3×1956335161³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1956335111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814621 + ... + 817018.

It is an arithmetic number, because the mean of its divisors is an integer number (269220600).

Almost surely, 2^1956335161 is an apocalyptic number.

1956335161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1956335161 is a deficient number, since it is larger than the sum of its proper divisors (197429639).

1956335161 is a wasteful number, since it uses less digits than its factorization.

1956335161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631759.

The product of its digits is 72900, while the sum is 40.

The square root of 1956335161 is about 44230.4777387719. The cubic root of 1956335161 is about 1250.6844594904.

The spelling of 1956335161 in words is "one billion, nine hundred fifty-six million, three hundred thirty-five thousand, one hundred sixty-one".