1188961426 has 8 divisors (see below), whose sum is σ = 1790904960. Its totient is φ = 591993108.

The previous prime is 1188961399. The next prime is 1188961447. The reversal of 1188961426 is 6241698811.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243206 + ... + 1244161.

It is an arithmetic number, because the mean of its divisors is an integer number (223863120).

Almost surely, 2^1188961426 is an apocalyptic number.

1188961426 is a deficient number, since it is larger than the sum of its proper divisors (601943534).

1188961426 is a wasteful number, since it uses less digits than its factorization.

1188961426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487608.

The product of its digits is 165888, while the sum is 46.

The square root of 1188961426 is about 34481.3199573334. The cubic root of 1188961426 is about 1059.3901279949.

The spelling of 1188961426 in words is "one billion, one hundred eighty-eight million, nine hundred sixty-one thousand, four hundred twenty-six".