1649794308 has 48 divisors (see below), whose sum is σ = 4102003584. Its totient is φ = 514275840.

The previous prime is 1649794303. The next prime is 1649794327. The reversal of 1649794308 is 8034979461.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1649794303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6273 + ... + 57783.

It is an arithmetic number, because the mean of its divisors is an integer number (85458408).

Almost surely, 2^1649794308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1649794308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051001792).

1649794308 is an abundant number, since it is smaller than the sum of its proper divisors (2452209276).

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

1649794308 is a wasteful number, since it uses less digits than its factorization.

1649794308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51692 (or 51690 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 1649794308 is about 40617.6600507710. The cubic root of 1649794308 is about 1181.6166455600.

The spelling of 1649794308 in words is "one billion, six hundred forty-nine million, seven hundred ninety-four thousand, three hundred eight".