1451165897 has 4 divisors (see below), whose sum is σ = 1455550416. Its totient is φ = 1446781380.

The previous prime is 1451165873. The next prime is 1451165899. The reversal of 1451165897 is 7985611541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1451165897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1451165899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2191763 + ... + 2192424.

It is an arithmetic number, because the mean of its divisors is an integer number (363887604).

Almost surely, 2^1451165897 is an apocalyptic number.

It is an amenable number.

1451165897 is a deficient number, since it is larger than the sum of its proper divisors (4384519).

1451165897 is an equidigital number, since it uses as much as digits as its factorization.

1451165897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384518.

The product of its digits is 302400, while the sum is 47.

The square root of 1451165897 is about 38094.1714308108. The cubic root of 1451165897 is about 1132.1544760511.

It can be divided in two parts, 14511 and 65897, that added together give a palindrome (80408).

The spelling of 1451165897 in words is "one billion, four hundred fifty-one million, one hundred sixty-five thousand, eight hundred ninety-seven".