1115012091 has 8 divisors (see below), whose sum is σ = 1487238480. Its totient is φ = 743063552.

The previous prime is 1115012089. The next prime is 1115012113. The reversal of 1115012091 is 1902105111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115012091 - 2¹ = 1115012089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115012021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59910 + ... + 76283.

It is an arithmetic number, because the mean of its divisors is an integer number (185904810).

Almost surely, 2^1115012091 is an apocalyptic number.

1115012091 is a deficient number, since it is larger than the sum of its proper divisors (372226389).

1115012091 is a wasteful number, since it uses less digits than its factorization.

1115012091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138925.

The product of its (nonzero) digits is 90, while the sum is 21.

The square root of 1115012091 is about 33391.7967620792. The cubic root of 1115012091 is about 1036.9548780205.

The spelling of 1115012091 in words is "one billion, one hundred fifteen million, twelve thousand, ninety-one".