1956065893 has 4 divisors (see below), whose sum is σ = 1975056928. Its totient is φ = 1937074860.

The previous prime is 1956065851. The next prime is 1956065899. The reversal of 1956065893 is 3985606591.

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 1956065893 - 2⁹ = 1956065381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1956065893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956065899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9495363 + ... + 9495568.

It is an arithmetic number, because the mean of its divisors is an integer number (493764232).

Almost surely, 2^1956065893 is an apocalyptic number.

It is an amenable number.

1956065893 is a deficient number, since it is larger than the sum of its proper divisors (18991035).

1956065893 is a wasteful number, since it uses less digits than its factorization.

1956065893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18991034.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The square root of 1956065893 is about 44227.4337148336. The cubic root of 1956065893 is about 1250.6270758747.

The spelling of 1956065893 in words is "one billion, nine hundred fifty-six million, sixty-five thousand, eight hundred ninety-three".