1021879682 has 8 divisors (see below), whose sum is σ = 1533044556. Its totient is φ = 510864832.

The previous prime is 1021879681. The next prime is 1021879693. The reversal of 1021879682 is 2869781201.

It can be written as a sum of positive squares in 2 ways, for example, as 954130321 + 67749361 = 30889^2 + 8231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1021879682² = 2088476168968842248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021879681) 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, 18563 + ... + 48870.

Almost surely, 2^1021879682 is an apocalyptic number.

1021879682 is a deficient number, since it is larger than the sum of its proper divisors (511164874).

1021879682 is an equidigital number, since it uses as much as digits as its factorization.

1021879682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75012.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 1021879682 is about 31966.8528635523. The cubic root of 1021879682 is about 1007.2406734450.

The spelling of 1021879682 in words is "one billion, twenty-one million, eight hundred seventy-nine thousand, six hundred eighty-two".