1002665451 has 4 divisors (see below), whose sum is σ = 1336887272. Its totient is φ = 668443632.

The previous prime is 1002665437. The next prime is 1002665453. The reversal of 1002665451 is 1545662001.

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

It is not a de Polignac number, because 1002665451 - 2¹³ = 1002657259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002665453) 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, 167110906 + ... + 167110911.

It is an arithmetic number, because the mean of its divisors is an integer number (334221818).

Almost surely, 2^1002665451 is an apocalyptic number.

1002665451 is a deficient number, since it is larger than the sum of its proper divisors (334221821).

1002665451 is an equidigital number, since it uses as much as digits as its factorization.

1002665451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334221820.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1002665451 is about 31664.8930362949. The cubic root of 1002665451 is about 1000.8876954303.

The spelling of 1002665451 in words is "one billion, two million, six hundred sixty-five thousand, four hundred fifty-one".