1148644686 has 32 divisors (see below), whose sum is σ = 2669978880. Its totient is φ = 322621056.

The previous prime is 1148644667. The next prime is 1148644691. The reversal of 1148644686 is 6864468411.

It is a super-2 number, since 2×1148644686² = 2638769229352077192, which contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 229291 + ... + 234246.

It is an arithmetic number, because the mean of its divisors is an integer number (83436840).

Almost surely, 2^1148644686 is an apocalyptic number.

1148644686 is an abundant number, since it is smaller than the sum of its proper divisors (1521334194).

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

1148644686 is a wasteful number, since it uses less digits than its factorization.

1148644686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463608.

The product of its digits is 884736, while the sum is 48.

The square root of 1148644686 is about 33891.6610097528. The cubic root of 1148644686 is about 1047.2778121561.

The spelling of 1148644686 in words is "one billion, one hundred forty-eight million, six hundred forty-four thousand, six hundred eighty-six".