1094157909 has 32 divisors (see below), whose sum is σ = 1821576960. Its totient is φ = 644048064.

The previous prime is 1094157899. The next prime is 1094157937. The reversal of 1094157909 is 9097514901.

It is not a de Polignac number, because 1094157909 - 2⁵ = 1094157877 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 (1094157409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59694 + ... + 75839.

It is an arithmetic number, because the mean of its divisors is an integer number (56924280).

Almost surely, 2^1094157909 is an apocalyptic number.

It is an amenable number.

1094157909 is a deficient number, since it is larger than the sum of its proper divisors (727419051).

1094157909 is a wasteful number, since it uses less digits than its factorization.

1094157909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135578 (or 135572 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 1094157909 is about 33078.0578178345. The cubic root of 1094157909 is about 1030.4493935557.

The spelling of 1094157909 in words is "one billion, ninety-four million, one hundred fifty-seven thousand, nine hundred nine".