1451685613 has 6 divisors (see below), whose sum is σ = 1688695566. Its totient is φ = 1244301912.

The previous prime is 1451685611. The next prime is 1451685659. The reversal of 1451685613 is 3165861541.

It can be written as a sum of positive squares in only one way, i.e., 775789609 + 675896004 = 27853^2 + 25998^2 .

It is not a de Polignac number, because 1451685613 - 2¹ = 1451685611 is a prime.

It is a super-2 number, since 2×1451685613² = 4214782237982371538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451685611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14813070 + ... + 14813167.

It is an arithmetic number, because the mean of its divisors is an integer number (281449261).

Almost surely, 2^1451685613 is an apocalyptic number.

It is an amenable number.

1451685613 is a deficient number, since it is larger than the sum of its proper divisors (237009953).

1451685613 is an equidigital number, since it uses as much as digits as its factorization.

1451685613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29626251 (or 29626244 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 1451685613 is about 38100.9922836663. The cubic root of 1451685613 is about 1132.2896153366.

The spelling of 1451685613 in words is "one billion, four hundred fifty-one million, six hundred eighty-five thousand, six hundred thirteen".