1111978308 has 96 divisors (see below), whose sum is σ = 3088834560. Its totient is φ = 304657920.

The previous prime is 1111978289. The next prime is 1111978327. The reversal of 1111978308 is 8038791111.

It is an interprime number because it is at equal distance from previous prime (1111978289) and next prime (1111978327).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292363 + ... + 296141.

It is an arithmetic number, because the mean of its divisors is an integer number (32175360).

Almost surely, 2^1111978308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111978308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544417280).

1111978308 is an abundant number, since it is smaller than the sum of its proper divisors (1976856252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111978308 is a wasteful number, since it uses less digits than its factorization.

1111978308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937 (or 3935 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 39.

The square root of 1111978308 is about 33346.3387495539. The cubic root of 1111978308 is about 1036.0135568159.

It can be divided in two parts, 1111978 and 308, that added together give a triangular number (1112286 = T₁₄₉₁).

The spelling of 1111978308 in words is "one billion, one hundred eleven million, nine hundred seventy-eight thousand, three hundred eight".