1187897963 has 8 divisors (see below), whose sum is σ = 1357839360. Its totient is φ = 1018017000.

The previous prime is 1187897941. The next prime is 1187897969. The reversal of 1187897963 is 3697987811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1187897963 - 2²⁴ = 1171120747 is a prime.

It is a super-2 number, since 2×1187897963² = 2822203140999098738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187897969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40838 + ... + 63588.

It is an arithmetic number, because the mean of its divisors is an integer number (169729920).

Almost surely, 2^1187897963 is an apocalyptic number.

1187897963 is a deficient number, since it is larger than the sum of its proper divisors (169941397).

1187897963 is an equidigital number, since it uses as much as digits as its factorization.

1187897963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30217.

The product of its digits is 4572288, while the sum is 59.

The square root of 1187897963 is about 34465.8956506283. The cubic root of 1187897963 is about 1059.0741776629.

The spelling of 1187897963 in words is "one billion, one hundred eighty-seven million, eight hundred ninety-seven thousand, nine hundred sixty-three".