1379371066 has 4 divisors (see below), whose sum is σ = 2069056602. Its totient is φ = 689685532.

The previous prime is 1379371001. The next prime is 1379371067. The reversal of 1379371066 is 6601739731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6601739731 = 53 ⋅124561127.

It can be written as a sum of positive squares in only one way, i.e., 1312540441 + 66830625 = 36229^2 + 8175^2 .

It is not an unprimeable number, because it can be changed into a prime (1379371067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344842765 + ... + 344842768.

Almost surely, 2^1379371066 is an apocalyptic number.

1379371066 is a deficient number, since it is larger than the sum of its proper divisors (689685536).

1379371066 is an equidigital number, since it uses as much as digits as its factorization.

1379371066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689685535.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 1379371066 is about 37139.8851102154. The cubic root of 1379371066 is about 1113.1671217524.

The spelling of 1379371066 in words is "one billion, three hundred seventy-nine million, three hundred seventy-one thousand, sixty-six".