1648536451 has 8 divisors (see below), whose sum is σ = 1689177600. Its totient is φ = 1608000072.

The previous prime is 1648536419. The next prime is 1648536469. The reversal of 1648536451 is 1546358461.

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 1648536451 - 2⁵ = 1648536419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 1648536398 and 1648536407.

It is not an unprimeable number, because it can be changed into a prime (1648536551) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6150 + ... + 57748.

It is an arithmetic number, because the mean of its divisors is an integer number (211147200).

Almost surely, 2^1648536451 is an apocalyptic number.

1648536451 is a deficient number, since it is larger than the sum of its proper divisors (40641149).

1648536451 is an equidigital number, since it uses as much as digits as its factorization.

1648536451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52385.

The product of its digits is 345600, while the sum is 43.

The square root of 1648536451 is about 40602.1729837210. The cubic root of 1648536451 is about 1181.3162681821.

The spelling of 1648536451 in words is "one billion, six hundred forty-eight million, five hundred thirty-six thousand, four hundred fifty-one".