1194985305 has 24 divisors (see below), whose sum is σ = 2148025152. Its totient is φ = 637324848.

The previous prime is 1194985277. The next prime is 1194985307. The reversal of 1194985305 is 5035894911.

It is not a de Polignac number, because 1194985305 - 2⁵ = 1194985273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1194985307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490549 + ... + 492978.

It is an arithmetic number, because the mean of its divisors is an integer number (89501048).

Almost surely, 2^1194985305 is an apocalyptic number.

1194985305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1194985305 is a deficient number, since it is larger than the sum of its proper divisors (953039847).

1194985305 is an frugal number, since it uses more digits than its factorization.

1194985305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983547 (or 983535 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 1194985305 is about 34568.5594869095. The cubic root of 1194985305 is about 1061.1762500411.

The spelling of 1194985305 in words is "one billion, one hundred ninety-four million, nine hundred eighty-five thousand, three hundred five".