1081715807 has 4 divisors (see below), whose sum is σ = 1082776296. Its totient is φ = 1080655320.

The previous prime is 1081715777. The next prime is 1081715819. The reversal of 1081715807 is 7085171801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1081715807 - 2¹⁸ = 1081453663 is a prime.

It is a super-2 number, since 2×1081715807² = 2340218174227322498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081715897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528713 + ... + 530754.

It is an arithmetic number, because the mean of its divisors is an integer number (270694074).

Almost surely, 2^1081715807 is an apocalyptic number.

1081715807 is a deficient number, since it is larger than the sum of its proper divisors (1060489).

1081715807 is a wasteful number, since it uses less digits than its factorization.

1081715807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060488.

The product of its (nonzero) digits is 15680, while the sum is 38.

The square root of 1081715807 is about 32889.4482623227. The cubic root of 1081715807 is about 1026.5286117683.

The spelling of 1081715807 in words is "one billion, eighty-one million, seven hundred fifteen thousand, eight hundred seven".