2139536890 has 16 divisors (see below), whose sum is σ = 3859492608. Its totient is φ = 853964496.

The previous prime is 2139536881. The next prime is 2139536941. The reversal of 2139536890 is 986359312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2139536890.

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, 226422 + ... + 235681.

It is an arithmetic number, because the mean of its divisors is an integer number (241218288).

Almost surely, 2^2139536890 is an apocalyptic number.

2139536890 is a deficient number, since it is larger than the sum of its proper divisors (1719955718).

2139536890 is a wasteful number, since it uses less digits than its factorization.

2139536890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462573.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 2139536890 is about 46255.1282562269. The cubic root of 2139536890 is about 1288.5657777749.

It can be divided in two parts, 21395 and 36890, that added together give a palindrome (58285).

The spelling of 2139536890 in words is "two billion, one hundred thirty-nine million, five hundred thirty-six thousand, eight hundred ninety".