2684601890 has 16 divisors (see below), whose sum is σ = 4860218808. Its totient is φ = 1067632896.

The previous prime is 2684601889. The next prime is 2684601919. The reversal of 2684601890 is 981064862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2612538769 + 72063121 = 51113^2 + 8489^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774167 + ... + 777626.

Almost surely, 2^2684601890 is an apocalyptic number.

2684601890 is a deficient number, since it is larger than the sum of its proper divisors (2175616918).

2684601890 is a wasteful number, since it uses less digits than its factorization.

2684601890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551973.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 2684601890 is about 51813.1439887602. The cubic root of 2684601890 is about 1389.8245021085.

The spelling of 2684601890 in words is "two billion, six hundred eighty-four million, six hundred one thousand, eight hundred ninety".