1995056659 has 4 divisors (see below), whose sum is σ = 1996989016. Its totient is φ = 1993124304.

The previous prime is 1995056629. The next prime is 1995056669. The reversal of 1995056659 is 9566505991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1995056659 - 2¹⁷ = 1994925587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1995056629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964629 + ... + 966694.

It is an arithmetic number, because the mean of its divisors is an integer number (499247254).

Almost surely, 2^1995056659 is an apocalyptic number.

1995056659 is a deficient number, since it is larger than the sum of its proper divisors (1932357).

1995056659 is a wasteful number, since it uses less digits than its factorization.

1995056659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932356.

The product of its (nonzero) digits is 3280500, while the sum is 55.

The square root of 1995056659 is about 44666.0571239504. The cubic root of 1995056659 is about 1258.8821569267.

The spelling of 1995056659 in words is "one billion, nine hundred ninety-five million, fifty-six thousand, six hundred fifty-nine".