1020977641 has 2 divisors, whose sum is σ = 1020977642. Its totient is φ = 1020977640.

The previous prime is 1020977579. The next prime is 1020977677. The reversal of 1020977641 is 1467790201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 979439616 + 41538025 = 31296^2 + 6445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020977641 - 2¹⁷ = 1020846569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020977641.

It is not a weakly prime, because it can be changed into another prime (1020971641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510488820 + 510488821.

It is an arithmetic number, because the mean of its divisors is an integer number (510488821).

Almost surely, 2^1020977641 is an apocalyptic number.

It is an amenable number.

1020977641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020977641 is an equidigital number, since it uses as much as digits as its factorization.

1020977641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 1020977641 is about 31952.7407431663. The cubic root of 1020977641 is about 1006.9442132804.

The spelling of 1020977641 in words is "one billion, twenty million, nine hundred seventy-seven thousand, six hundred forty-one".