1660826051 has 2 divisors, whose sum is σ = 1660826052. Its totient is φ = 1660826050.

The previous prime is 1660826047. The next prime is 1660826131. The reversal of 1660826051 is 1506280661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1660826051 - 2² = 1660826047 is a prime.

It is not a weakly prime, because it can be changed into another prime (1660826551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830413025 + 830413026.

It is an arithmetic number, because the mean of its divisors is an integer number (830413026).

Almost surely, 2^1660826051 is an apocalyptic number.

1660826051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660826051 is an equidigital number, since it uses as much as digits as its factorization.

1660826051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1660826051 is about 40753.2336263026. The cubic root of 1660826051 is about 1184.2445174149.

The spelling of 1660826051 in words is "one billion, six hundred sixty million, eight hundred twenty-six thousand, fifty-one".