1649148570 has 48 divisors (see below), whose sum is σ = 4308157152. Its totient is φ = 437683680.

The previous prime is 1649148499. The next prime is 1649148619. The reversal of 1649148570 is 758419461.

1649148570 is a `hidden beast` number, since 1 + 64 + 9 + 14 + 8 + 570 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 24432 + ... + 62411.

It is an arithmetic number, because the mean of its divisors is an integer number (89753274).

Almost surely, 2^1649148570 is an apocalyptic number.

1649148570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1649148570 is an abundant number, since it is smaller than the sum of its proper divisors (2659008582).

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

1649148570 is a wasteful number, since it uses less digits than its factorization.

1649148570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87067 (or 87064 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1649148570 is about 40609.7102919979. The cubic root of 1649148570 is about 1181.4624618259.

The spelling of 1649148570 in words is "one billion, six hundred forty-nine million, one hundred forty-eight thousand, five hundred seventy".