111154849 has 9 divisors (see below), whose sum is σ = 120511539. Its totient is φ = 102477960.

The previous prime is 111154793. The next prime is 111154867. The reversal of 111154849 is 948451111.

The square root of 111154849 is 10543.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16443025 + 94711824 = 4055^2 + 9732^2 .

It is not a de Polignac number, because 111154849 - 2¹¹ = 111152801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111154949) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 136654 + ... + 137464.

It is an arithmetic number, because the mean of its divisors is an integer number (13390171).

Almost surely, 2^111154849 is an apocalyptic number.

111154849 is the 10543-rd square number.

111154849 is the 5272-nd centered octagonal number.

It is an amenable number.

111154849 is a deficient number, since it is larger than the sum of its proper divisors (9356690).

111154849 is an frugal number, since it uses more digits than its factorization.

111154849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 824 counting only the distinct ones).

The product of its digits is 5760, while the sum is 34.

The cubic root of 111154849 is about 480.8129294453.

The spelling of 111154849 in words is "one hundred eleven million, one hundred fifty-four thousand, eight hundred forty-nine".