1020510749 has 2 divisors, whose sum is σ = 1020510750. Its totient is φ = 1020510748.

The previous prime is 1020510737. The next prime is 1020510773. The reversal of 1020510749 is 9470150201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 997422724 + 23088025 = 31582^2 + 4805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020510749 - 2¹² = 1020506653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020510709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510255374 + 510255375.

It is an arithmetic number, because the mean of its divisors is an integer number (510255375).

Almost surely, 2^1020510749 is an apocalyptic number.

It is an amenable number.

1020510749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020510749 is an equidigital number, since it uses as much as digits as its factorization.

1020510749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1020510749 is about 31945.4339303757. The cubic root of 1020510749 is about 1006.7906983679.

The spelling of 1020510749 in words is "one billion, twenty million, five hundred ten thousand, seven hundred forty-nine".