1010643263 has 4 divisors (see below), whose sum is σ = 1155020880. Its totient is φ = 866265648.

The previous prime is 1010643239. The next prime is 1010643289. The reversal of 1010643263 is 3623460101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1010643263 - 2¹⁰ = 1010642239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010643203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72188798 + ... + 72188811.

It is an arithmetic number, because the mean of its divisors is an integer number (288755220).

Almost surely, 2^1010643263 is an apocalyptic number.

1010643263 is a deficient number, since it is larger than the sum of its proper divisors (144377617).

1010643263 is an equidigital number, since it uses as much as digits as its factorization.

1010643263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144377616.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1010643263 is about 31790.6159581723. The cubic root of 1010643263 is about 1003.5352416719.

The spelling of 1010643263 in words is "one billion, ten million, six hundred forty-three thousand, two hundred sixty-three".