1662357648 has 160 divisors (see below), whose sum is σ = 5271091200. Its totient is φ = 440616960.

The previous prime is 1662357647. The next prime is 1662357649. The reversal of 1662357648 is 8467532661.

It is an interprime number because it is at equal distance from previous prime (1662357647) and next prime (1662357649).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1662357597 and 1662357606.

It is not an unprimeable number, because it can be changed into a prime (1662357647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403503 + ... + 407601.

It is an arithmetic number, because the mean of its divisors is an integer number (32944320).

Almost surely, 2^1662357648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662357648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635545600).

1662357648 is an abundant number, since it is smaller than the sum of its proper divisors (3608733552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1662357648 is a wasteful number, since it uses less digits than its factorization.

1662357648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205 (or 4199 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 1662357648 is about 40772.0204061560. The cubic root of 1662357648 is about 1184.6084383451.

The spelling of 1662357648 in words is "one billion, six hundred sixty-two million, three hundred fifty-seven thousand, six hundred forty-eight".