1379662138 has 8 divisors (see below), whose sum is σ = 2117621088. Its totient is φ = 673788444.

The previous prime is 1379662091. The next prime is 1379662139. The reversal of 1379662138 is 8312669731.

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

It is not an unprimeable number, because it can be changed into a prime (1379662139) 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, 8021206 + ... + 8021377.

It is an arithmetic number, because the mean of its divisors is an integer number (264702636).

Almost surely, 2^1379662138 is an apocalyptic number.

1379662138 is a deficient number, since it is larger than the sum of its proper divisors (737958950).

1379662138 is a wasteful number, since it uses less digits than its factorization.

1379662138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16042628.

The product of its digits is 326592, while the sum is 46.

The square root of 1379662138 is about 37143.8034939881. The cubic root of 1379662138 is about 1113.2454156455.

The spelling of 1379662138 in words is "one billion, three hundred seventy-nine million, six hundred sixty-two thousand, one hundred thirty-eight".