1956163620 has 96 divisors (see below), whose sum is σ = 5783057280. Its totient is φ = 492687360.

The previous prime is 1956163613. The next prime is 1956163681. The reversal of 1956163620 is 263616591.

It is a super-2 number, since 2×1956163620² = 7653152216423008800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399990 + ... + 404850.

It is an arithmetic number, because the mean of its divisors is an integer number (60240180).

Almost surely, 2^1956163620 is an apocalyptic number.

1956163620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1956163620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2891528640).

1956163620 is an abundant number, since it is smaller than the sum of its proper divisors (3826893660).

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

1956163620 is a wasteful number, since it uses less digits than its factorization.

1956163620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245 (or 5243 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 1956163620 is about 44228.5385243510. The cubic root of 1956163620 is about 1250.6479030526.

The spelling of 1956163620 in words is "one billion, nine hundred fifty-six million, one hundred sixty-three thousand, six hundred twenty".