1081027397 has 2 divisors, whose sum is σ = 1081027398. Its totient is φ = 1081027396.

The previous prime is 1081027369. The next prime is 1081027411. The reversal of 1081027397 is 7937201801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824034436 + 256992961 = 28706^2 + 16031^2 .

It is an emirp because it is prime and its reverse (7937201801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1081027397 - 2⁸ = 1081027141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1081027397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081027357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540513698 + 540513699.

It is an arithmetic number, because the mean of its divisors is an integer number (540513699).

Almost surely, 2^1081027397 is an apocalyptic number.

It is an amenable number.

1081027397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081027397 is an equidigital number, since it uses as much as digits as its factorization.

1081027397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 1081027397 is about 32878.9810821443. The cubic root of 1081027397 is about 1026.3108027036.

The spelling of 1081027397 in words is "one billion, eighty-one million, twenty-seven thousand, three hundred ninety-seven".