1648968090 has 96 divisors (see below), whose sum is σ = 5022212544. Its totient is φ = 342639360.

The previous prime is 1648968073. The next prime is 1648968109. The reversal of 1648968090 is 908698461.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34819 + ... + 67158.

It is an arithmetic number, because the mean of its divisors is an integer number (52314714).

Almost surely, 2^1648968090 is an apocalyptic number.

1648968090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648968090 is an abundant number, since it is smaller than the sum of its proper divisors (3373244454).

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

1648968090 is a wasteful number, since it uses less digits than its factorization.

1648968090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102012 (or 102005 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 1648968090 is about 40607.4881025655. The cubic root of 1648968090 is about 1181.4193611763.

The spelling of 1648968090 in words is "one billion, six hundred forty-eight million, nine hundred sixty-eight thousand, ninety".