1021618151 has 2 divisors, whose sum is σ = 1021618152. Its totient is φ = 1021618150.

The previous prime is 1021618141. The next prime is 1021618159. The reversal of 1021618151 is 1518161201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021618151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021618151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021618159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510809075 + 510809076.

It is an arithmetic number, because the mean of its divisors is an integer number (510809076).

Almost surely, 2^1021618151 is an apocalyptic number.

1021618151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021618151 is an equidigital number, since it uses as much as digits as its factorization.

1021618151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 26.

The square root of 1021618151 is about 31962.7619426107. The cubic root of 1021618151 is about 1007.1547379735.

Adding to 1021618151 its reverse (1518161201), we get a palindrome (2539779352).

The spelling of 1021618151 in words is "one billion, twenty-one million, six hundred eighteen thousand, one hundred fifty-one".