1995981435 has 36 divisors (see below), whose sum is σ = 4024554768. Its totient is φ = 912447648.

The previous prime is 1995981419. The next prime is 1995981443. The reversal of 1995981435 is 5341895991.

1995981435 is a `hidden beast` number, since 1 + 9 + 9 + 598 + 1 + 43 + 5 = 666.

It is not a de Polignac number, because 1995981435 - 2⁴ = 1995981419 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 450399 + ... + 454808.

It is an arithmetic number, because the mean of its divisors is an integer number (111793188).

Almost surely, 2^1995981435 is an apocalyptic number.

1995981435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1995981435 is an abundant number, since it is smaller than the sum of its proper divisors (2028573333).

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

1995981435 is a wasteful number, since it uses less digits than its factorization.

1995981435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905232 (or 905222 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 54.

The square root of 1995981435 is about 44676.4080360093. The cubic root of 1995981435 is about 1259.0766383160.

The spelling of 1995981435 in words is "one billion, nine hundred ninety-five million, nine hundred eighty-one thousand, four hundred thirty-five".