2145027738 has 32 divisors (see below), whose sum is σ = 5016946176. Its totient is φ = 598611888.

The previous prime is 2145027721. The next prime is 2145027749. The reversal of 2145027738 is 8377205412.

It is a super-3 number, since 3×2145027738³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2145027696 and 2145027705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 592056 + ... + 595667.

It is an arithmetic number, because the mean of its divisors is an integer number (156779568).

Almost surely, 2^2145027738 is an apocalyptic number.

2145027738 is an abundant number, since it is smaller than the sum of its proper divisors (2871918438).

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

2145027738 is a wasteful number, since it uses less digits than its factorization.

2145027738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187778.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 2145027738 is about 46314.4441616220. Note that the first 3 decimals coincide. The cubic root of 2145027738 is about 1289.6671492661.

The spelling of 2145027738 in words is "two billion, one hundred forty-five million, twenty-seven thousand, seven hundred thirty-eight".