1201399195 has 16 divisors (see below), whose sum is σ = 1474796160. Its totient is φ = 939109504.

The previous prime is 1201399193. The next prime is 1201399217. The reversal of 1201399195 is 5919931021.

It is a cyclic number.

It is not a de Polignac number, because 1201399195 - 2¹ = 1201399193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201399193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149541 + ... + 157369.

It is an arithmetic number, because the mean of its divisors is an integer number (92174760).

Almost surely, 2^1201399195 is an apocalyptic number.

1201399195 is a deficient number, since it is larger than the sum of its proper divisors (273396965).

1201399195 is an equidigital number, since it uses as much as digits as its factorization.

1201399195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 1201399195 is about 34661.2059080465. The cubic root of 1201399195 is about 1063.0714272485.

The spelling of 1201399195 in words is "one billion, two hundred one million, three hundred ninety-nine thousand, one hundred ninety-five".