1157210109 has 96 divisors (see below), whose sum is σ = 1992646656. Its totient is φ = 639999360.

The previous prime is 1157210107. The next prime is 1157210137. The reversal of 1157210109 is 9010127511.

It is not a de Polignac number, because 1157210109 - 2¹ = 1157210107 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157210107) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5189172 + ... + 5189394.

It is an arithmetic number, because the mean of its divisors is an integer number (20756736).

Almost surely, 2^1157210109 is an apocalyptic number.

It is an amenable number.

1157210109 is a deficient number, since it is larger than the sum of its proper divisors (835436547).

1157210109 is a wasteful number, since it uses less digits than its factorization.

1157210109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

The square root of 1157210109 is about 34017.7910658526. The cubic root of 1157210109 is about 1049.8745455555.

The spelling of 1157210109 in words is "one billion, one hundred fifty-seven million, two hundred ten thousand, one hundred nine".