1027801945 has 8 divisors (see below), whose sum is σ = 1233558144. Its totient is φ = 822111024.

The previous prime is 1027801933. The next prime is 1027801949. The reversal of 1027801945 is 5491087201.

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 1027801945 - 2¹¹ = 1027799897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1027801949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30582 + ... + 54688.

It is an arithmetic number, because the mean of its divisors is an integer number (154194768).

Almost surely, 2^1027801945 is an apocalyptic number.

It is an amenable number.

1027801945 is a deficient number, since it is larger than the sum of its proper divisors (205756199).

1027801945 is an equidigital number, since it uses as much as digits as its factorization.

1027801945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32639.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1027801945 is about 32059.3503521204. The cubic root of 1027801945 is about 1009.1827342870.

The spelling of 1027801945 in words is "one billion, twenty-seven million, eight hundred one thousand, nine hundred forty-five".