1189020963 has 12 divisors (see below), whose sum is σ = 1716693720. Its totient is φ = 731704896.

The previous prime is 1189020929. The next prime is 1189020971. The reversal of 1189020963 is 3690209811.

It is not a de Polignac number, because 1189020963 - 2¹⁰ = 1189019939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1189020163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1172098 + ... + 1173111.

It is an arithmetic number, because the mean of its divisors is an integer number (143057810).

Almost surely, 2^1189020963 is an apocalyptic number.

1189020963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1189020963 is a deficient number, since it is larger than the sum of its proper divisors (527672757).

1189020963 is a wasteful number, since it uses less digits than its factorization.

1189020963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345238 (or 2345225 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1189020963 is about 34482.1832690449. The cubic root of 1189020963 is about 1059.4078106144.

The spelling of 1189020963 in words is "one billion, one hundred eighty-nine million, twenty thousand, nine hundred sixty-three".