1081362691 has 2 divisors, whose sum is σ = 1081362692. Its totient is φ = 1081362690.

The previous prime is 1081362683. The next prime is 1081362697. The reversal of 1081362691 is 1962631801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1081362691 - 2³ = 1081362683 is a prime.

It is a super-2 number, since 2×1081362691² = 2338690538973522962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1081362691.

It is not a weakly prime, because it can be changed into another prime (1081362697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540681345 + 540681346.

It is an arithmetic number, because the mean of its divisors is an integer number (540681346).

Almost surely, 2^1081362691 is an apocalyptic number.

1081362691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081362691 is an equidigital number, since it uses as much as digits as its factorization.

1081362691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1081362691 is about 32884.0795978844. The cubic root of 1081362691 is about 1026.4168993927.

The spelling of 1081362691 in words is "one billion, eighty-one million, three hundred sixty-two thousand, six hundred ninety-one".