2138829370 has 32 divisors (see below), whose sum is σ = 3951064656. Its totient is φ = 833126400.

The previous prime is 2138829367. The next prime is 2138829377. The reversal of 2138829370 is 739288312.

It can be written as a sum of positive squares in 8 ways, for example, as 1756196649 + 382632721 = 41907^2 + 19561^2 .

It is not an unprimeable number, because it can be changed into a prime (2138829377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232050 + ... + 241090.

Almost surely, 2^2138829370 is an apocalyptic number.

2138829370 is a deficient number, since it is larger than the sum of its proper divisors (1812235286).

2138829370 is a wasteful number, since it uses less digits than its factorization.

2138829370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9666.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 2138829370 is about 46247.4796070013. The cubic root of 2138829370 is about 1288.4237242030.

The spelling of 2138829370 in words is "two billion, one hundred thirty-eight million, eight hundred twenty-nine thousand, three hundred seventy".