1995664392 has 80 divisors (see below), whose sum is σ = 5883939600. Its totient is φ = 630205920.

The previous prime is 1995664387. The next prime is 1995664393. The reversal of 1995664392 is 2934665991.

1995664392 is a `hidden beast` number, since 199 + 5 + 6 + 64 + 392 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1995664393) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 68734 + ... + 93357.

It is an arithmetic number, because the mean of its divisors is an integer number (73549245).

Almost surely, 2^1995664392 is an apocalyptic number.

1995664392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1995664392 is an abundant number, since it is smaller than the sum of its proper divisors (3888275208).

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

1995664392 is a wasteful number, since it uses less digits than its factorization.

1995664392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162128 (or 162115 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 1995664392 is about 44672.8596801235. The cubic root of 1995664392 is about 1259.0099705997.

It can be divided in two parts, 19956 and 64392, that added together give a palindrome (84348).

The spelling of 1995664392 in words is "one billion, nine hundred ninety-five million, six hundred sixty-four thousand, three hundred ninety-two".