1077513781 has 2 divisors, whose sum is σ = 1077513782. Its totient is φ = 1077513780.

The previous prime is 1077513757. The next prime is 1077513809. The reversal of 1077513781 is 1873157701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613800625 + 463713156 = 24775^2 + 21534^2 .

It is a cyclic number.

It is not a de Polignac number, because 1077513781 - 2¹³ = 1077505589 is a prime.

It is a super-2 number, since 2×1077513781² = 2322071896489831922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1077513721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538756890 + 538756891.

It is an arithmetic number, because the mean of its divisors is an integer number (538756891).

Almost surely, 2^1077513781 is an apocalyptic number.

It is an amenable number.

1077513781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1077513781 is an equidigital number, since it uses as much as digits as its factorization.

1077513781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 40.

The square root of 1077513781 is about 32825.5050380036. The cubic root of 1077513781 is about 1025.1976714938.

The spelling of 1077513781 in words is "one billion, seventy-seven million, five hundred thirteen thousand, seven hundred eighty-one".