1379001665 has 32 divisors (see below), whose sum is σ = 1855768320. Its totient is φ = 977577984.

The previous prime is 1379001661. The next prime is 1379001677. The reversal of 1379001665 is 5661009731.

It is a cyclic number.

It is not a de Polignac number, because 1379001665 - 2² = 1379001661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1379001661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267149 + ... + 272261.

It is an arithmetic number, because the mean of its divisors is an integer number (57992760).

Almost surely, 2^1379001665 is an apocalyptic number.

It is an amenable number.

1379001665 is a deficient number, since it is larger than the sum of its proper divisors (476766655).

1379001665 is a wasteful number, since it uses less digits than its factorization.

1379001665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 1379001665 is about 37134.9116735182. The cubic root of 1379001665 is about 1113.0677427018.

The spelling of 1379001665 in words is "one billion, three hundred seventy-nine million, one thousand, six hundred sixty-five".