1020154841 has 2 divisors, whose sum is σ = 1020154842. Its totient is φ = 1020154840.

The previous prime is 1020154739. The next prime is 1020154879. The reversal of 1020154841 is 1484510201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009396441 + 10758400 = 31771^2 + 3280^2 .

It is an emirp because it is prime and its reverse (1484510201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020154841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020154841.

It is not a weakly prime, because it can be changed into another prime (1020157841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510077420 + 510077421.

It is an arithmetic number, because the mean of its divisors is an integer number (510077421).

Almost surely, 2^1020154841 is an apocalyptic number.

It is an amenable number.

1020154841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020154841 is an equidigital number, since it uses as much as digits as its factorization.

1020154841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1020154841 is about 31939.8628832373. The cubic root of 1020154841 is about 1006.6736437368.

The spelling of 1020154841 in words is "one billion, twenty million, one hundred fifty-four thousand, eight hundred forty-one".