2139540514 has 8 divisors (see below), whose sum is σ = 3240469440. Its totient is φ = 1059384036.

The previous prime is 2139540497. The next prime is 2139540539. The reversal of 2139540514 is 4150459312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2139540514² = 9155267222094768392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2139540514.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5192854 + ... + 5193265.

It is an arithmetic number, because the mean of its divisors is an integer number (405058680).

Almost surely, 2^2139540514 is an apocalyptic number.

2139540514 is a deficient number, since it is larger than the sum of its proper divisors (1100928926).

2139540514 is a wasteful number, since it uses less digits than its factorization.

2139540514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10386224.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2139540514 is about 46255.1674302450. The cubic root of 2139540514 is about 1288.5665053093.

Adding to 2139540514 its reverse (4150459312), we get a palindrome (6289999826).

The spelling of 2139540514 in words is "two billion, one hundred thirty-nine million, five hundred forty thousand, five hundred fourteen".