1188490946 has 8 divisors (see below), whose sum is σ = 1784167500. Its totient is φ = 593768448.

The previous prime is 1188490943. The next prime is 1188490967. The reversal of 1188490946 is 6490948811.

It can be written as a sum of positive squares in 2 ways, for example, as 1133062921 + 55428025 = 33661^2 + 7445^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1188490894 and 1188490903.

It is not an unprimeable number, because it can be changed into a prime (1188490943) 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 3 ways as a sum of consecutive naturals, for example, 235391 + ... + 240386.

Almost surely, 2^1188490946 is an apocalyptic number.

1188490946 is a deficient number, since it is larger than the sum of its proper divisors (595676554).

1188490946 is a wasteful number, since it uses less digits than its factorization.

1188490946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477028.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1188490946 is about 34474.4970376654. The cubic root of 1188490946 is about 1059.2503736362.

The spelling of 1188490946 in words is "one billion, one hundred eighty-eight million, four hundred ninety thousand, nine hundred forty-six".