1646676452 has 6 divisors (see below), whose sum is σ = 2881683798. Its totient is φ = 823338224.

The previous prime is 1646676431. The next prime is 1646676461. The reversal of 1646676452 is 2546766461.

It can be written as a sum of positive squares in only one way, i.e., 1454964736 + 191711716 = 38144^2 + 13846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1646676397 and 1646676406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205834553 + ... + 205834560.

It is an arithmetic number, because the mean of its divisors is an integer number (480280633).

Almost surely, 2^1646676452 is an apocalyptic number.

It is an amenable number.

1646676452 is a deficient number, since it is larger than the sum of its proper divisors (1235007346).

1646676452 is a wasteful number, since it uses less digits than its factorization.

1646676452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411669117 (or 411669115 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 47.

The square root of 1646676452 is about 40579.2613535535. The cubic root of 1646676452 is about 1180.8718186100.

Subtracting 1646676452 from its reverse (2546766461), we obtain a palindrome (900090009).

The spelling of 1646676452 in words is "one billion, six hundred forty-six million, six hundred seventy-six thousand, four hundred fifty-two".