1427019897 has 16 divisors (see below), whose sum is σ = 1933034240. Its totient is φ = 936254592.

The previous prime is 1427019857. The next prime is 1427019929. The reversal of 1427019897 is 7989107241.

It is not a de Polignac number, because 1427019897 - 2⁸ = 1427019641 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427019817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64563 + ... + 83799.

It is an arithmetic number, because the mean of its divisors is an integer number (120814640).

Almost surely, 2^1427019897 is an apocalyptic number.

It is an amenable number.

1427019897 is a deficient number, since it is larger than the sum of its proper divisors (506014343).

1427019897 is a wasteful number, since it uses less digits than its factorization.

1427019897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19632.

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 1427019897 is about 37775.9168915858. The cubic root of 1427019897 is about 1125.8400039466.

The spelling of 1427019897 in words is "one billion, four hundred twenty-seven million, nineteen thousand, eight hundred ninety-seven".