1071499709 has 24 divisors (see below), whose sum is σ = 1276480800. Its totient is φ = 896525280.

The previous prime is 1071499691. The next prime is 1071499721. The reversal of 1071499709 is 9079941701.

It is a de Polignac number, because none of the positive numbers 2^k-1071499709 is a prime.

It is a super-2 number, since 2×1071499709² = 2296223252774169362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071499789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 414182 + ... + 416760.

It is an arithmetic number, because the mean of its divisors is an integer number (53186700).

Almost surely, 2^1071499709 is an apocalyptic number.

It is an amenable number.

1071499709 is a deficient number, since it is larger than the sum of its proper divisors (204981091).

1071499709 is a wasteful number, since it uses less digits than its factorization.

1071499709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 47.

The square root of 1071499709 is about 32733.7701617153. The cubic root of 1071499709 is about 1023.2867541555.

The spelling of 1071499709 in words is "one billion, seventy-one million, four hundred ninety-nine thousand, seven hundred nine".