1111493897 has 8 divisors (see below), whose sum is σ = 1131292800. Its totient is φ = 1091838384.

The previous prime is 1111493893. The next prime is 1111493917. The reversal of 1111493897 is 7983941111.

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 1111493897 - 2² = 1111493893 is a prime.

It is a super-3 number, since 3×1111493897³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111493891) 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, 20147 + ... + 51272.

It is an arithmetic number, because the mean of its divisors is an integer number (141411600).

Almost surely, 2^1111493897 is an apocalyptic number.

It is an amenable number.

1111493897 is a deficient number, since it is larger than the sum of its proper divisors (19798903).

1111493897 is an equidigital number, since it uses as much as digits as its factorization.

1111493897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71695.

The product of its digits is 54432, while the sum is 44.

The square root of 1111493897 is about 33339.0746272298. The cubic root of 1111493897 is about 1035.8630954710.

The spelling of 1111493897 in words is "one billion, one hundred eleven million, four hundred ninety-three thousand, eight hundred ninety-seven".