1656416051 has 2 divisors, whose sum is σ = 1656416052. Its totient is φ = 1656416050.

The previous prime is 1656415931. The next prime is 1656416057. The reversal of 1656416051 is 1506146561.

It is a strong prime.

It is an emirp because it is prime and its reverse (1506146561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1656416051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1656416057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828208025 + 828208026.

It is an arithmetic number, because the mean of its divisors is an integer number (828208026).

Almost surely, 2^1656416051 is an apocalyptic number.

1656416051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656416051 is an equidigital number, since it uses as much as digits as its factorization.

1656416051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1656416051 is about 40699.0915254874. The cubic root of 1656416051 is about 1183.1954114375.

The spelling of 1656416051 in words is "one billion, six hundred fifty-six million, four hundred sixteen thousand, fifty-one".