1995612234 has 64 divisors (see below), whose sum is σ = 5027484672. Its totient is φ = 512985600.

The previous prime is 1995612217. The next prime is 1995612239. The reversal of 1995612234 is 4322165991.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1995612239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22549 + ... + 67079.

It is an arithmetic number, because the mean of its divisors is an integer number (78554448).

Almost surely, 2^1995612234 is an apocalyptic number.

1995612234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1995612234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2513742336).

1995612234 is an abundant number, since it is smaller than the sum of its proper divisors (3031872438).

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

1995612234 is a wasteful number, since it uses less digits than its factorization.

1995612234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44651.

The product of its digits is 116640, while the sum is 42.

The square root of 1995612234 is about 44672.2758990406. The cubic root of 1995612234 is about 1258.9990021533. Note that the first 3 decimals are identical.

The spelling of 1995612234 in words is "one billion, nine hundred ninety-five million, six hundred twelve thousand, two hundred thirty-four".