13138609370 has 32 divisors (see below), whose sum is σ = 24249343248. Its totient is φ = 5123409408.

The previous prime is 13138609361. The next prime is 13138609481. The reversal of 13138609370 is 7390683131.

It can be written as a sum of positive squares in 8 ways, for example, as 3895132921 + 9243476449 = 62411^2 + 96143^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4262 + ... + 162158.

Almost surely, 2^13138609370 is an apocalyptic number.

13138609370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13138609370 is a deficient number, since it is larger than the sum of its proper divisors (11110733878).

13138609370 is a wasteful number, since it uses less digits than its factorization.

13138609370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158114.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 13138609370 in words is "thirteen billion, one hundred thirty-eight million, six hundred nine thousand, three hundred seventy".