1071281379 has 16 divisors (see below), whose sum is σ = 1632957440. Its totient is φ = 611962560.

The previous prime is 1071281377. The next prime is 1071281413. The reversal of 1071281379 is 9731821701.

It is not a de Polignac number, because 1071281379 - 2¹ = 1071281377 is a prime.

It is a super-2 number, since 2×1071281379² = 2295287585984283282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071281371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80127 + ... + 92535.

It is an arithmetic number, because the mean of its divisors is an integer number (102059840).

Almost surely, 2^1071281379 is an apocalyptic number.

1071281379 is a deficient number, since it is larger than the sum of its proper divisors (561676061).

1071281379 is a wasteful number, since it uses less digits than its factorization.

1071281379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16530.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 1071281379 is about 32730.4350566869. The cubic root of 1071281379 is about 1023.2172474099.

The spelling of 1071281379 in words is "one billion, seventy-one million, two hundred eighty-one thousand, three hundred seventy-nine".