1188380971 has 8 divisors (see below), whose sum is σ = 1260988560. Its totient is φ = 1116073728.

The previous prime is 1188380957. The next prime is 1188380983. The reversal of 1188380971 is 1790838811.

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

It is a cyclic number.

It is not a de Polignac number, because 1188380971 - 2¹¹ = 1188378923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1188380671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66906 + ... + 82783.

It is an arithmetic number, because the mean of its divisors is an integer number (157623570).

Almost surely, 2^1188380971 is an apocalyptic number.

1188380971 is a deficient number, since it is larger than the sum of its proper divisors (72607589).

1188380971 is a wasteful number, since it uses less digits than its factorization.

1188380971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150173.

The product of its (nonzero) digits is 96768, while the sum is 46.

The square root of 1188380971 is about 34472.9019811213. The cubic root of 1188380971 is about 1059.2177006477.

The spelling of 1188380971 in words is "one billion, one hundred eighty-eight million, three hundred eighty thousand, nine hundred seventy-one".