1995109259 has 16 divisors (see below), whose sum is σ = 2424733920. Its totient is φ = 1616482560.

The previous prime is 1995109219. The next prime is 1995109261. The reversal of 1995109259 is 9529015991.

It is not a de Polignac number, because 1995109259 - 2²⁴ = 1978332043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1995109219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236402 + ... + 244695.

It is an arithmetic number, because the mean of its divisors is an integer number (151545870).

Almost surely, 2^1995109259 is an apocalyptic number.

1995109259 is a deficient number, since it is larger than the sum of its proper divisors (429624661).

1995109259 is a wasteful number, since it uses less digits than its factorization.

1995109259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481150.

The product of its (nonzero) digits is 328050, while the sum is 50.

The square root of 1995109259 is about 44666.6459340748. The cubic root of 1995109259 is about 1258.8932203751.

The spelling of 1995109259 in words is "one billion, nine hundred ninety-five million, one hundred nine thousand, two hundred fifty-nine".