1002181882 has 16 divisors (see below), whose sum is σ = 1619605512. Its totient is φ = 462346560.

The previous prime is 1002181879. The next prime is 1002181903. The reversal of 1002181882 is 2881812001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 830073721 + 172108161 = 28811^2 + 13119^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65832 + ... + 79612.

Almost surely, 2^1002181882 is an apocalyptic number.

1002181882 is a deficient number, since it is larger than the sum of its proper divisors (617423630).

1002181882 is a wasteful number, since it uses less digits than its factorization.

1002181882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16593.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 1002181882 is about 31657.2563877541. The cubic root of 1002181882 is about 1000.7267656837.

Adding to 1002181882 its reverse (2881812001), we get a palindrome (3883993883).

The spelling of 1002181882 in words is "one billion, two million, one hundred eighty-one thousand, eight hundred eighty-two".