1148623666 has 16 divisors (see below), whose sum is σ = 1827080280. Its totient is φ = 539700480.

The previous prime is 1148623661. The next prime is 1148623667. The reversal of 1148623666 is 6663268411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1099917225 + 48706441 = 33165^2 + 6979^2 .

It is not an unprimeable number, because it can be changed into a prime (1148623661) 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, 3081 + ... + 48028.

Almost surely, 2^1148623666 is an apocalyptic number.

1148623666 is a deficient number, since it is larger than the sum of its proper divisors (678456614).

1148623666 is a wasteful number, since it uses less digits than its factorization.

1148623666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51789.

The product of its digits is 248832, while the sum is 43.

The square root of 1148623666 is about 33891.3509025533. The cubic root of 1148623666 is about 1047.2714237826.

The spelling of 1148623666 in words is "one billion, one hundred forty-eight million, six hundred twenty-three thousand, six hundred sixty-six".