1027920386 has 4 divisors (see below), whose sum is σ = 1541880582. Its totient is φ = 513960192.

The previous prime is 1027920359. The next prime is 1027920401. The reversal of 1027920386 is 6830297201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1026882025 + 1038361 = 32045^2 + 1019^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256980095 + ... + 256980098.

Almost surely, 2^1027920386 is an apocalyptic number.

1027920386 is a deficient number, since it is larger than the sum of its proper divisors (513960196).

1027920386 is an equidigital number, since it uses as much as digits as its factorization.

1027920386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513960195.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1027920386 is about 32061.1975135053. The cubic root of 1027920386 is about 1009.2214979229.

The spelling of 1027920386 in words is "one billion, twenty-seven million, nine hundred twenty thousand, three hundred eighty-six".