1020345451 has 8 divisors (see below), whose sum is σ = 1028331360. Its totient is φ = 1012382208.

The previous prime is 1020345437. The next prime is 1020345497. The reversal of 1020345451 is 1545430201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020345451 - 2⁹ = 1020344939 is a prime.

It is a super-2 number, since 2×1020345451² = 2082209678752786802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020345551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91065 + ... + 101653.

It is an arithmetic number, because the mean of its divisors is an integer number (128541420).

Almost surely, 2^1020345451 is an apocalyptic number.

1020345451 is a deficient number, since it is larger than the sum of its proper divisors (7985909).

1020345451 is a wasteful number, since it uses less digits than its factorization.

1020345451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11333.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1020345451 is about 31942.8466326970. The cubic root of 1020345451 is about 1006.7363368712.

Adding to 1020345451 its reverse (1545430201), we get a palindrome (2565775652).

The spelling of 1020345451 in words is "one billion, twenty million, three hundred forty-five thousand, four hundred fifty-one".