1649684094 has 32 divisors (see below), whose sum is σ = 3327282816. Its totient is φ = 545257440.

The previous prime is 1649684089. The next prime is 1649684119. The reversal of 1649684094 is 4904869461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536349 + ... + 539415.

It is an arithmetic number, because the mean of its divisors is an integer number (103977588).

Almost surely, 2^1649684094 is an apocalyptic number.

1649684094 is an abundant number, since it is smaller than the sum of its proper divisors (1677598722).

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

1649684094 is a wasteful number, since it uses less digits than its factorization.

1649684094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 1649684094 is about 40616.3033029841. The cubic root of 1649684094 is about 1181.5903324621.

The spelling of 1649684094 in words is "one billion, six hundred forty-nine million, six hundred eighty-four thousand, ninety-four".