1927740897 has 16 divisors (see below), whose sum is σ = 2862712960. Its totient is φ = 1282100400.

The previous prime is 1927740851. The next prime is 1927740917. The reversal of 1927740897 is 7980477291.

It is not a de Polignac number, because 1927740897 - 2¹² = 1927736801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1927740847) 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, 73429 + ... + 96162.

It is an arithmetic number, because the mean of its divisors is an integer number (178919560).

Almost surely, 2^1927740897 is an apocalyptic number.

It is an amenable number.

1927740897 is a deficient number, since it is larger than the sum of its proper divisors (934972063).

1927740897 is a wasteful number, since it uses less digits than its factorization.

1927740897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170021 (or 170015 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The square root of 1927740897 is about 43906.0462465023. The cubic root of 1927740897 is about 1244.5610936552.

The spelling of 1927740897 in words is "one billion, nine hundred twenty-seven million, seven hundred forty thousand, eight hundred ninety-seven".