1995870129 has 16 divisors (see below), whose sum is σ = 2907601920. Its totient is φ = 1207735760.

The previous prime is 1995870101. The next prime is 1995870197. The reversal of 1995870129 is 9210785991.

It is not a de Polignac number, because 1995870129 - 2¹¹ = 1995868081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1995870829) 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, 25389 + ... + 68090.

It is an arithmetic number, because the mean of its divisors is an integer number (181725120).

Almost surely, 2^1995870129 is an apocalyptic number.

It is an amenable number.

1995870129 is a deficient number, since it is larger than the sum of its proper divisors (911731791).

1995870129 is a wasteful number, since it uses less digits than its factorization.

1995870129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94140.

The product of its (nonzero) digits is 408240, while the sum is 51.

The square root of 1995870129 is about 44675.1623276290. The cubic root of 1995870129 is about 1259.0532337246.

The spelling of 1995870129 in words is "one billion, nine hundred ninety-five million, eight hundred seventy thousand, one hundred twenty-nine".