7082181487 has 4 divisors (see below), whose sum is σ = 7498780416. Its totient is φ = 6665582560.

The previous prime is 7082181473. The next prime is 7082181517. The reversal of 7082181487 is 7841812807.

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 7082181487 - 2¹⁹ = 7081657199 is a prime.

It is a super-2 number, since 2×7082181487² (a number of 21 digits) 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 (7082181187) 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, 208299439 + ... + 208299472.

It is an arithmetic number, because the mean of its divisors is an integer number (1874695104).

Almost surely, 2^7082181487 is an apocalyptic number.

7082181487 is a deficient number, since it is larger than the sum of its proper divisors (416598929).

7082181487 is a wasteful number, since it uses less digits than its factorization.

7082181487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416598928.

The product of its (nonzero) digits is 200704, while the sum is 46.

The square root of 7082181487 is about 84155.6978879030. The cubic root of 7082181487 is about 1920.3881491556.

The spelling of 7082181487 in words is "seven billion, eighty-two million, one hundred eighty-one thousand, four hundred eighty-seven".