1189051090 has 16 divisors (see below), whose sum is σ = 2140688088. Its totient is φ = 475532416.

The previous prime is 1189051067. The next prime is 1189051091. The reversal of 1189051090 is 901509811.

It can be written as a sum of positive squares in 4 ways, for example, as 871961841 + 317089249 = 29529^2 + 17807^2 .

It is not an unprimeable number, because it can be changed into a prime (1189051091) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 89094 + ... + 101566.

Almost surely, 2^1189051090 is an apocalyptic number.

1189051090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1189051090 is a deficient number, since it is larger than the sum of its proper divisors (951636998).

1189051090 is a wasteful number, since it uses less digits than its factorization.

1189051090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22013.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 1189051090 is about 34482.6201150667. The cubic root of 1189051090 is about 1059.4167581745.

The spelling of 1189051090 in words is "one billion, one hundred eighty-nine million, fifty-one thousand, ninety".