1960807985 has 16 divisors (see below), whose sum is σ = 2413832400. Its totient is φ = 1528181760.

The previous prime is 1960807969. The next prime is 1960808023. The reversal of 1960807985 is 5897080691.

It can be written as a sum of positive squares in 8 ways, for example, as 1024 + 1960806961 = 32^2 + 44281^2 .

It is not a de Polignac number, because 1960807985 - 2⁴ = 1960807969 is a prime.

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, 143741 + ... + 156789.

It is an arithmetic number, because the mean of its divisors is an integer number (150864525).

Almost surely, 2^1960807985 is an apocalyptic number.

It is an amenable number.

1960807985 is a deficient number, since it is larger than the sum of its proper divisors (453024415).

1960807985 is a wasteful number, since it uses less digits than its factorization.

1960807985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13828.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 1960807985 is about 44281.0115625197. The cubic root of 1960807985 is about 1251.6368923311.

The spelling of 1960807985 in words is "one billion, nine hundred sixty million, eight hundred seven thousand, nine hundred eighty-five".