1649425457628 has 96 divisors (see below), whose sum is σ = 4605504825600. Its totient is φ = 507485621952.

The previous prime is 1649425457621. The next prime is 1649425457707. The reversal of 1649425457628 is 8267545249461.

1649425457628 is a `hidden beast` number, since 1 + 6 + 4 + 9 + 4 + 2 + 54 + 576 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649425457621) 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, 41823703 + ... + 41863121.

It is an arithmetic number, because the mean of its divisors is an integer number (47974008600).

Almost surely, 2^{1649425457628} is an apocalyptic number.

1649425457628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1649425457628 is an abundant number, since it is smaller than the sum of its proper divisors (2956079367972).

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

1649425457628 is a wasteful number, since it uses less digits than its factorization.

1649425457628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69248 (or 69240 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 63.

The spelling of 1649425457628 in words is "one trillion, six hundred forty-nine billion, four hundred twenty-five million, four hundred fifty-seven thousand, six hundred twenty-eight".