1189021946 has 24 divisors (see below), whose sum is σ = 2082259476. Its totient is φ = 507729600.

The previous prime is 1189021931. The next prime is 1189021979. The reversal of 1189021946 is 6491209811.

It can be written as a sum of positive squares in 2 ways, for example, as 1159743025 + 29278921 = 34055^2 + 5411^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5246 + ... + 49046.

Almost surely, 2^1189021946 is an apocalyptic number.

1189021946 is a deficient number, since it is larger than the sum of its proper divisors (893237530).

1189021946 is a wasteful number, since it uses less digits than its factorization.

1189021946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44094 (or 44087 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1189021946 is about 34482.1975227798. The cubic root of 1189021946 is about 1059.4081025626.

The spelling of 1189021946 in words is "one billion, one hundred eighty-nine million, twenty-one thousand, nine hundred forty-six".