1664996348 has 6 divisors (see below), whose sum is σ = 2913743616. Its totient is φ = 832498172.

The previous prime is 1664996341. The next prime is 1664996357. The reversal of 1664996348 is 8436994661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1664996293 and 1664996302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664996341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208124540 + ... + 208124547.

It is an arithmetic number, because the mean of its divisors is an integer number (485623936).

Almost surely, 2^1664996348 is an apocalyptic number.

It is an amenable number.

1664996348 is a deficient number, since it is larger than the sum of its proper divisors (1248747268).

1664996348 is a wasteful number, since it uses less digits than its factorization.

1664996348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416249091 (or 416249089 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 56.

The square root of 1664996348 is about 40804.3667761185. The cubic root of 1664996348 is about 1185.2348927561.

The spelling of 1664996348 in words is "one billion, six hundred sixty-four million, nine hundred ninety-six thousand, three hundred forty-eight".