1960121856 has 160 divisors (see below), whose sum is σ = 6510797568. Its totient is φ = 509091840.

The previous prime is 1960121837. The next prime is 1960121869. The reversal of 1960121856 is 6581210691.

It is a congruent 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, 109986 + ... + 126558.

Almost surely, 2^1960121856 is an apocalyptic number.

1960121856 is a gapful number since it is divisible by the number (16) 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 1960121856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3255398784).

1960121856 is an abundant number, since it is smaller than the sum of its proper divisors (4550675712).

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

1960121856 is a wasteful number, since it uses less digits than its factorization.

1960121856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16612 (or 16596 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 1960121856 is about 44273.2634442052. The cubic root of 1960121856 is about 1251.4908837190.

The spelling of 1960121856 in words is "one billion, nine hundred sixty million, one hundred twenty-one thousand, eight hundred fifty-six".