1189947468 has 24 divisors (see below), whose sum is σ = 2784419568. Its totient is φ = 395524096.

The previous prime is 1189947461. The next prime is 1189947509. The reversal of 1189947468 is 8647499811.

It is a happy number.

It is a super-2 number, since 2×1189947468² = 2831949953199222048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1189947461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136221 + ... + 144692.

It is an arithmetic number, because the mean of its divisors is an integer number (116017482).

Almost surely, 2^1189947468 is an apocalyptic number.

It is an amenable number.

1189947468 is an abundant number, since it is smaller than the sum of its proper divisors (1594472100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1189947468 is a wasteful number, since it uses less digits than its factorization.

1189947468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281273 (or 281271 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 1189947468 is about 34495.6151996163. The cubic root of 1189947468 is about 1059.6829085952.

The spelling of 1189947468 in words is "one billion, one hundred eighty-nine million, nine hundred forty-seven thousand, four hundred sixty-eight".