1027021649 has 8 divisors (see below), whose sum is σ = 1081376640. Its totient is φ = 972696816.

The previous prime is 1027021643. The next prime is 1027021679. The reversal of 1027021649 is 9461207201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1027021649 - 2¹² = 1027017553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1027021643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107579 + ... + 116735.

It is an arithmetic number, because the mean of its divisors is an integer number (135172080).

Almost surely, 2^1027021649 is an apocalyptic number.

1027021649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1027021649 is a deficient number, since it is larger than the sum of its proper divisors (54354991).

1027021649 is an equidigital number, since it uses as much as digits as its factorization.

1027021649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15079.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1027021649 is about 32047.1784873489. The cubic root of 1027021649 is about 1008.9272827978.

The spelling of 1027021649 in words is "one billion, twenty-seven million, twenty-one thousand, six hundred forty-nine".