1671752864 has 12 divisors (see below), whose sum is σ = 3291263514. Its totient is φ = 835876416.

The previous prime is 1671752809. The next prime is 1671752869. The reversal of 1671752864 is 4682571761.

It can be written as a sum of positive squares in only one way, i.e., 1557091600 + 114661264 = 39460^2 + 10708^2 .

It is not an unprimeable number, because it can be changed into a prime (1671752869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26121107 + ... + 26121170.

Almost surely, 2^1671752864 is an apocalyptic number.

It is an amenable number.

1671752864 is a deficient number, since it is larger than the sum of its proper divisors (1619510650).

1671752864 is an equidigital number, since it uses as much as digits as its factorization.

1671752864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52242287 (or 52242279 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 1671752864 is about 40887.0745346252. The cubic root of 1671752864 is about 1186.8359474591.

The spelling of 1671752864 in words is "one billion, six hundred seventy-one million, seven hundred fifty-two thousand, eight hundred sixty-four".