1199644953 has 32 divisors (see below), whose sum is σ = 1781028480. Its totient is φ = 713525760.

The previous prime is 1199644939. The next prime is 1199644991. The reversal of 1199644953 is 3594469911.

It is not a de Polignac number, because 1199644953 - 2⁶ = 1199644889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1199644896 and 1199644905.

It is not an unprimeable number, because it can be changed into a prime (1199644993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170850 + ... + 177732.

It is an arithmetic number, because the mean of its divisors is an integer number (55657140).

Almost surely, 2^1199644953 is an apocalyptic number.

1199644953 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1199644953 is a deficient number, since it is larger than the sum of its proper divisors (581383527).

1199644953 is a wasteful number, since it uses less digits than its factorization.

1199644953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7049.

The product of its digits is 1049760, while the sum is 51.

The square root of 1199644953 is about 34635.8911102342. The cubic root of 1199644953 is about 1062.5537550289.

The spelling of 1199644953 in words is "one billion, one hundred ninety-nine million, six hundred forty-four thousand, nine hundred fifty-three".