1956919745 has 16 divisors (see below), whose sum is σ = 2566009152. Its totient is φ = 1420868160.

The previous prime is 1956919717. The next prime is 1956919753. The reversal of 1956919745 is 5479196591.

It is not a de Polignac number, because 1956919745 - 2¹⁰ = 1956918721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4694 + ... + 62736.

It is an arithmetic number, because the mean of its divisors is an integer number (160375572).

Almost surely, 2^1956919745 is an apocalyptic number.

It is an amenable number.

1956919745 is a deficient number, since it is larger than the sum of its proper divisors (609089407).

1956919745 is a wasteful number, since it uses less digits than its factorization.

1956919745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58672.

The product of its digits is 3061800, while the sum is 56.

The square root of 1956919745 is about 44237.0856295936. The cubic root of 1956919745 is about 1250.8090218739.

The spelling of 1956919745 in words is "one billion, nine hundred fifty-six million, nine hundred nineteen thousand, seven hundred forty-five".