1665271148 has 12 divisors (see below), whose sum is σ = 2981997480. Its totient is φ = 813271872.

The previous prime is 1665271121. The next prime is 1665271163. The reversal of 1665271148 is 8411725661.

It is a super-2 number, since 2×1665271148² = 5546255992722475808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4840733 + ... + 4841076.

It is an arithmetic number, because the mean of its divisors is an integer number (248499790).

Almost surely, 2^1665271148 is an apocalyptic number.

It is an amenable number.

1665271148 is a deficient number, since it is larger than the sum of its proper divisors (1316726332).

1665271148 is a wasteful number, since it uses less digits than its factorization.

1665271148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681856 (or 9681854 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 1665271148 is about 40807.7339238532. The cubic root of 1665271148 is about 1185.3000950276.

The spelling of 1665271148 in words is "one billion, six hundred sixty-five million, two hundred seventy-one thousand, one hundred forty-eight".