1118443077 has 12 divisors (see below), whose sum is σ = 1632185100. Its totient is φ = 737941248.

The previous prime is 1118443061. The next prime is 1118443121. The reversal of 1118443077 is 7703448111.

It can be written as a sum of positive squares in 2 ways, for example, as 225270081 + 893172996 = 15009^2 + 29886^2 .

It is not a de Polignac number, because 1118443077 - 2⁴ = 1118443061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118444077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 639702 + ... + 641447.

It is an arithmetic number, because the mean of its divisors is an integer number (136015425).

Almost surely, 2^1118443077 is an apocalyptic number.

It is an amenable number.

1118443077 is a deficient number, since it is larger than the sum of its proper divisors (513742023).

1118443077 is a wasteful number, since it uses less digits than its factorization.

1118443077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281252 (or 1281249 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1118443077 is about 33443.1319855064. The cubic root of 1118443077 is about 1038.0173880834.

It can be divided in two parts, 111844 and 3077, that added together give a square (114921 = 339²).

The spelling of 1118443077 in words is "one billion, one hundred eighteen million, four hundred forty-three thousand, seventy-seven".