1319379705 has 64 divisors (see below), whose sum is σ = 2797240320. Its totient is φ = 576911808.

The previous prime is 1319379701. The next prime is 1319379749. The reversal of 1319379705 is 5079739131.

It is not a de Polignac number, because 1319379705 - 2² = 1319379701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1319379701) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8617 + ... + 52086.

It is an arithmetic number, because the mean of its divisors is an integer number (43706880).

Almost surely, 2^1319379705 is an apocalyptic number.

1319379705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1319379705 is an abundant number, since it is smaller than the sum of its proper divisors (1477860615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1319379705 is a wasteful number, since it uses less digits than its factorization.

1319379705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60747 (or 60741 counting only the distinct ones).

The product of its (nonzero) digits is 178605, while the sum is 45.

The square root of 1319379705 is about 36323.2667170782. The cubic root of 1319379705 is about 1096.7894553784.

The spelling of 1319379705 in words is "one billion, three hundred nineteen million, three hundred seventy-nine thousand, seven hundred five".