195091007 has 4 divisors (see below), whose sum is σ = 195180456. Its totient is φ = 195001560.

The previous prime is 195090989. The next prime is 195091027. The reversal of 195091007 is 700190591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700190591 = 269 ⋅2602939.

It is a cyclic number.

It is not a de Polignac number, because 195091007 - 2¹⁴ = 195074623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195091027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41369 + ... + 45842.

It is an arithmetic number, because the mean of its divisors is an integer number (48795114).

Almost surely, 2^195091007 is an apocalyptic number.

195091007 is a deficient number, since it is larger than the sum of its proper divisors (89449).

195091007 is an equidigital number, since it uses as much as digits as its factorization.

195091007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89448.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 195091007 is about 13967.4982369786. The cubic root of 195091007 is about 579.9791976289.

The spelling of 195091007 in words is "one hundred ninety-five million, ninety-one thousand, seven".