1956521946 has 16 divisors (see below), whose sum is σ = 4047976800. Its totient is φ = 629685168.

The previous prime is 1956521923. The next prime is 1956521947. The reversal of 1956521946 is 6491256591.

It is a junction number, because it is equal to n+sod(n) for n = 1956521895 and 1956521904.

It is not an unprimeable number, because it can be changed into a prime (1956521947) 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, 5622016 + ... + 5622363.

It is an arithmetic number, because the mean of its divisors is an integer number (252998550).

Almost surely, 2^1956521946 is an apocalyptic number.

1956521946 is an abundant number, since it is smaller than the sum of its proper divisors (2091454854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1956521946 is a wasteful number, since it uses less digits than its factorization.

1956521946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11244413.

The product of its digits is 583200, while the sum is 48.

The square root of 1956521946 is about 44232.5891848985. The cubic root of 1956521946 is about 1250.7242620878.

The spelling of 1956521946 in words is "one billion, nine hundred fifty-six million, five hundred twenty-one thousand, nine hundred forty-six".