1081373977 has 2 divisors, whose sum is σ = 1081373978. Its totient is φ = 1081373976.

The previous prime is 1081373959. The next prime is 1081374043. The reversal of 1081373977 is 7793731801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005143616 + 76230361 = 31704^2 + 8731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081373977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081373947) 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, 540686988 + 540686989.

It is an arithmetic number, because the mean of its divisors is an integer number (540686989).

Almost surely, 2^1081373977 is an apocalyptic number.

It is an amenable number.

1081373977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081373977 is an equidigital number, since it uses as much as digits as its factorization.

1081373977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 46.

The square root of 1081373977 is about 32884.2512002326. The cubic root of 1081373977 is about 1026.4204702270.

The spelling of 1081373977 in words is "one billion, eighty-one million, three hundred seventy-three thousand, nine hundred seventy-seven".