1111247890 has 16 divisors (see below), whose sum is σ = 2034149760. Its totient is φ = 436965040.

The previous prime is 1111247881. The next prime is 1111247923. The reversal of 1111247890 is 987421111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941146 + ... + 942325.

It is an arithmetic number, because the mean of its divisors is an integer number (127134360).

Almost surely, 2^1111247890 is an apocalyptic number.

1111247890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111247890 is a deficient number, since it is larger than the sum of its proper divisors (922901870).

1111247890 is a wasteful number, since it uses less digits than its factorization.

1111247890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883537.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 1111247890 is about 33335.3849535295. The cubic root of 1111247890 is about 1035.7866672884.

It can be divided in two parts, 1111 and 247890, that added together give a square (249001 = 499²).

The spelling of 1111247890 in words is "one billion, one hundred eleven million, two hundred forty-seven thousand, eight hundred ninety".