1078763381 has 2 divisors, whose sum is σ = 1078763382. Its totient is φ = 1078763380.

The previous prime is 1078763377. The next prime is 1078763401. The reversal of 1078763381 is 1833678701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542424100 + 536339281 = 23290^2 + 23159^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078763381 - 2² = 1078763377 is a prime.

It is a super-2 number, since 2×1078763381² = 2327460864373102322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078763311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539381690 + 539381691.

It is an arithmetic number, because the mean of its divisors is an integer number (539381691).

Almost surely, 2^1078763381 is an apocalyptic number.

It is an amenable number.

1078763381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078763381 is an equidigital number, since it uses as much as digits as its factorization.

1078763381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 1078763381 is about 32844.5335025480. The cubic root of 1078763381 is about 1025.5938279432.

The spelling of 1078763381 in words is "one billion, seventy-eight million, seven hundred sixty-three thousand, three hundred eighty-one".