2139485670 has 64 divisors (see below), whose sum is σ = 6520343040. Its totient is φ = 489024864.

The previous prime is 2139485617. The next prime is 2139485713. The reversal of 2139485670 is 765849312.

2139485670 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

2139485670 is strictly pandigital in base 10.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564112 + ... + 567891.

It is an arithmetic number, because the mean of its divisors is an integer number (101880360).

It is a 1-persistent number, because it is pandigital, but 2⋅2139485670 = 4278971340 is not.

Almost surely, 2^2139485670 is an apocalyptic number.

2139485670 is an abundant number, since it is smaller than the sum of its proper divisors (4380857370).

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

2139485670 is a wasteful number, since it uses less digits than its factorization.

2139485670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132026 (or 1132020 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2139485670 is about 46254.5745845749. The cubic root of 2139485670 is about 1288.5554950410. Note that the first 3 decimals are identical.

The spelling of 2139485670 in words is "two billion, one hundred thirty-nine million, four hundred eighty-five thousand, six hundred seventy".