195940815 has 32 divisors (see below), whose sum is σ = 359385600. Its totient is φ = 89299584.

The previous prime is 195940799. The next prime is 195940831. The reversal of 195940815 is 518049591.

It is an interprime number because it is at equal distance from previous prime (195940799) and next prime (195940831).

It is not a de Polignac number, because 195940815 - 2⁴ = 195940799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33972 + ... + 39318.

It is an arithmetic number, because the mean of its divisors is an integer number (11230800).

Almost surely, 2^195940815 is an apocalyptic number.

195940815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

195940815 is a deficient number, since it is larger than the sum of its proper divisors (163444785).

195940815 is a wasteful number, since it uses less digits than its factorization.

195940815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 195940815 is about 13997.8860904067. The cubic root of 195940815 is about 580.8200992758.

The spelling of 195940815 in words is "one hundred ninety-five million, nine hundred forty thousand, eight hundred fifteen".