1148886661 has 16 divisors (see below), whose sum is σ = 1304029440. Its totient is φ = 1003423680.

The previous prime is 1148886653. The next prime is 1148886679. The reversal of 1148886661 is 1666888411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1148886661 - 2³ = 1148886653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148886631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229956 + ... + 234898.

It is an arithmetic number, because the mean of its divisors is an integer number (81501840).

Almost surely, 2^1148886661 is an apocalyptic number.

It is an amenable number.

1148886661 is a deficient number, since it is larger than the sum of its proper divisors (155142779).

1148886661 is a wasteful number, since it uses less digits than its factorization.

1148886661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916.

The product of its digits is 442368, while the sum is 49.

The square root of 1148886661 is about 33895.2306527039. The cubic root of 1148886661 is about 1047.3513472997.

The spelling of 1148886661 in words is "one billion, one hundred forty-eight million, eight hundred eighty-six thousand, six hundred sixty-one".