1660847107 has 2 divisors, whose sum is σ = 1660847108. Its totient is φ = 1660847106.

The previous prime is 1660847063. The next prime is 1660847117. The reversal of 1660847107 is 7017480661.

It is a strong prime.

It is an emirp because it is prime and its reverse (7017480661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1660847107 is a prime.

It is a super-2 number, since 2×1660847107² = 5516826225660538898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1660847107.

It is not a weakly prime, because it can be changed into another prime (1660847117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830423553 + 830423554.

It is an arithmetic number, because the mean of its divisors is an integer number (830423554).

Almost surely, 2^1660847107 is an apocalyptic number.

1660847107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660847107 is an equidigital number, since it uses as much as digits as its factorization.

1660847107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 1660847107 is about 40753.4919608124. The cubic root of 1660847107 is about 1184.2495220224.

The spelling of 1660847107 in words is "one billion, six hundred sixty million, eight hundred forty-seven thousand, one hundred seven".