1022663381 has 2 divisors, whose sum is σ = 1022663382. Its totient is φ = 1022663380.

The previous prime is 1022663359. The next prime is 1022663399. The reversal of 1022663381 is 1833662201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556535281 + 466128100 = 23591^2 + 21590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022663381 - 2¹⁴ = 1022646997 is a prime.

It is a super-2 number, since 2×1022663381² = 2091680781676702322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022663321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511331690 + 511331691.

It is an arithmetic number, because the mean of its divisors is an integer number (511331691).

Almost surely, 2^1022663381 is an apocalyptic number.

It is an amenable number.

1022663381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022663381 is an equidigital number, since it uses as much as digits as its factorization.

1022663381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1022663381 is about 31979.1085085247. The cubic root of 1022663381 is about 1007.4980983366.

The spelling of 1022663381 in words is "one billion, twenty-two million, six hundred sixty-three thousand, three hundred eighty-one".