1648743550 has 24 divisors (see below), whose sum is σ = 3131915616. Its totient is φ = 645464640.

The previous prime is 1648743517. The next prime is 1648743637. The reversal of 1648743550 is 553478461.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1648743497 and 1648743506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348447 + ... + 353146.

It is an arithmetic number, because the mean of its divisors is an integer number (130496484).

Almost surely, 2^1648743550 is an apocalyptic number.

1648743550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648743550 is a deficient number, since it is larger than the sum of its proper divisors (1483172066).

1648743550 is a wasteful number, since it uses less digits than its factorization.

1648743550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701652 (or 701647 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 1648743550 is about 40604.7232474253. The cubic root of 1648743550 is about 1181.3657341137.

The spelling of 1648743550 in words is "one billion, six hundred forty-eight million, seven hundred forty-three thousand, five hundred fifty".