1189485656 has 8 divisors (see below), whose sum is σ = 2230285620. Its totient is φ = 594742824.

The previous prime is 1189485637. The next prime is 1189485659. The reversal of 1189485656 is 6565849811.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1189485656² = 2829752251659500672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1189485598 and 1189485607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189485659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74342846 + ... + 74342861.

Almost surely, 2^1189485656 is an apocalyptic number.

It is an amenable number.

1189485656 is a deficient number, since it is larger than the sum of its proper divisors (1040799964).

1189485656 is a wasteful number, since it uses less digits than its factorization.

1189485656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148685713 (or 148685709 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 53.

The square root of 1189485656 is about 34488.9207717493. The cubic root of 1189485656 is about 1059.5458051745.

The spelling of 1189485656 in words is "one billion, one hundred eighty-nine million, four hundred eighty-five thousand, six hundred fifty-six".