1071949259 has 4 divisors (see below), whose sum is σ = 1082562720. Its totient is φ = 1061335800.

The previous prime is 1071949199. The next prime is 1071949261. The reversal of 1071949259 is 9529491701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1071949259 is a prime.

It is a super-2 number, since 2×1071949259² = 2298150427741298162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071949159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5306579 + ... + 5306780.

It is an arithmetic number, because the mean of its divisors is an integer number (270640680).

Almost surely, 2^1071949259 is an apocalyptic number.

1071949259 is a deficient number, since it is larger than the sum of its proper divisors (10613461).

1071949259 is a wasteful number, since it uses less digits than its factorization.

1071949259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10613460.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 1071949259 is about 32740.6362033483. The cubic root of 1071949259 is about 1023.4298415303.

The spelling of 1071949259 in words is "one billion, seventy-one million, nine hundred forty-nine thousand, two hundred fifty-nine".