1370138138 has 8 divisors (see below), whose sum is σ = 2056131840. Its totient is φ = 684760860.

The previous prime is 1370138131. The next prime is 1370138149. The reversal of 1370138138 is 8318310731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1370138098 and 1370138107.

It is not an unprimeable number, because it can be changed into a prime (1370138131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148508 + ... + 157463.

It is an arithmetic number, because the mean of its divisors is an integer number (257016480).

Almost surely, 2^1370138138 is an apocalyptic number.

1370138138 is a deficient number, since it is larger than the sum of its proper divisors (685993702).

1370138138 is a wasteful number, since it uses less digits than its factorization.

1370138138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308212.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1370138138 is about 37015.3770479243. The cubic root of 1370138138 is about 1110.6778690939.

Adding to 1370138138 its reverse (8318310731), we get a palindrome (9688448869).

The spelling of 1370138138 in words is "one billion, three hundred seventy million, one hundred thirty-eight thousand, one hundred thirty-eight".