1020154510189 has 2 divisors, whose sum is σ = 1020154510190. Its totient is φ = 1020154510188.

The previous prime is 1020154510187. The next prime is 1020154510211. The reversal of 1020154510189 is 9810154510201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 876330015625 + 143824494564 = 936125^2 + 379242^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020154510189 - 2¹ = 1020154510187 is a prime.

Together with 1020154510187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020154510187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510077255094 + 510077255095.

It is an arithmetic number, because the mean of its divisors is an integer number (510077255095).

Almost surely, 2^{1020154510189} is an apocalyptic number.

It is an amenable number.

1020154510189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020154510189 is an equidigital number, since it uses as much as digits as its factorization.

1020154510189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 37.

The spelling of 1020154510189 in words is "one trillion, twenty billion, one hundred fifty-four million, five hundred ten thousand, one hundred eighty-nine".