1648648581734 has 64 divisors (see below), whose sum is σ = 3350152396800. Its totient is φ = 588893911200.

The previous prime is 1648648581733. The next prime is 1648648581761. The reversal of 1648648581734 is 4371858468461.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648648581733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8997164 + ... + 9178575.

It is an arithmetic number, because the mean of its divisors is an integer number (52346131200).

Almost surely, 2^{1648648581734} is an apocalyptic number.

1648648581734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1648648581734 is an abundant number, since it is smaller than the sum of its proper divisors (1701503815066).

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

1648648581734 is a wasteful number, since it uses less digits than its factorization.

1648648581734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18175809.

The product of its digits is 123863040, while the sum is 65.

The spelling of 1648648581734 in words is "one trillion, six hundred forty-eight billion, six hundred forty-eight million, five hundred eighty-one thousand, seven hundred thirty-four".