1651606043 has 2 divisors, whose sum is σ = 1651606044. Its totient is φ = 1651606042.

The previous prime is 1651606031. The next prime is 1651606067. The reversal of 1651606043 is 3406061561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1651606043 - 2⁶ = 1651605979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1651606013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825803021 + 825803022.

It is an arithmetic number, because the mean of its divisors is an integer number (825803022).

Almost surely, 2^1651606043 is an apocalyptic number.

1651606043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651606043 is an equidigital number, since it uses as much as digits as its factorization.

1651606043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1651606043 is about 40639.9562376733. The cubic root of 1651606043 is about 1182.0490212939.

The spelling of 1651606043 in words is "one billion, six hundred fifty-one million, six hundred six thousand, forty-three".