2138113970 has 16 divisors (see below), whose sum is σ = 4074994008. Its totient is φ = 804936960.

The previous prime is 2138113933. The next prime is 2138113979. The reversal of 2138113970 is 793118312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2130099409 + 8014561 = 46153^2 + 2831^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2138113970.

It is not an unprimeable number, because it can be changed into a prime (2138113979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6288401 + ... + 6288740.

Almost surely, 2^2138113970 is an apocalyptic number.

2138113970 is a deficient number, since it is larger than the sum of its proper divisors (1936880038).

2138113970 is a wasteful number, since it uses less digits than its factorization.

2138113970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12577165.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2138113970 is about 46239.7444845881. The cubic root of 2138113970 is about 1288.2800566541.

The spelling of 2138113970 in words is "two billion, one hundred thirty-eight million, one hundred thirteen thousand, nine hundred seventy".