1791342664 has 16 divisors (see below), whose sum is σ = 3362306220. Its totient is φ = 894727680.

The previous prime is 1791342661. The next prime is 1791342691. The reversal of 1791342664 is 4662431971.

It can be written as a sum of positive squares in 2 ways, for example, as 1700902564 + 90440100 = 41242^2 + 9510^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1791342664.

It is not an unprimeable number, because it can be changed into a prime (1791342661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109857 + ... + 125104.

Almost surely, 2^1791342664 is an apocalyptic number.

It is an amenable number.

1791342664 is a deficient number, since it is larger than the sum of its proper divisors (1570963556).

1791342664 is a wasteful number, since it uses less digits than its factorization.

1791342664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235920 (or 235916 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 1791342664 is about 42324.2562131929. The cubic root of 1791342664 is about 1214.4870542740.

The spelling of 1791342664 in words is "one billion, seven hundred ninety-one million, three hundred forty-two thousand, six hundred sixty-four".