1798216051 has 2 divisors, whose sum is σ = 1798216052. Its totient is φ = 1798216050.

The previous prime is 1798216033. The next prime is 1798216067. The reversal of 1798216051 is 1506128971.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1506128971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1798216051 - 2⁹ = 1798215539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1798215995 and 1798216013.

It is not a weakly prime, because it can be changed into another prime (1798216001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899108025 + 899108026.

It is an arithmetic number, because the mean of its divisors is an integer number (899108026).

Almost surely, 2^1798216051 is an apocalyptic number.

1798216051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798216051 is an equidigital number, since it uses as much as digits as its factorization.

1798216051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 1798216051 is about 42405.3776188823. The cubic root of 1798216051 is about 1216.0384019047.

The spelling of 1798216051 in words is "one billion, seven hundred ninety-eight million, two hundred sixteen thousand, fifty-one".