1188421070 has 32 divisors (see below), whose sum is σ = 2179146240. Its totient is φ = 466510240.

The previous prime is 1188421049. The next prime is 1188421081. The reversal of 1188421070 is 701248811.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437015 + ... + 439725.

It is an arithmetic number, because the mean of its divisors is an integer number (68098320).

Almost surely, 2^1188421070 is an apocalyptic number.

1188421070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1188421070 is a deficient number, since it is larger than the sum of its proper divisors (990725170).

1188421070 is a wasteful number, since it uses less digits than its factorization.

1188421070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 1188421070 is about 34473.4835779618. The cubic root of 1188421070 is about 1059.2296140812.

Adding to 1188421070 its reverse (701248811), we get a palindrome (1889669881).

The spelling of 1188421070 in words is "one billion, one hundred eighty-eight million, four hundred twenty-one thousand, seventy".