1188416020 has 36 divisors (see below), whose sum is σ = 2743184052. Its totient is φ = 432150400.

The previous prime is 1188416011. The next prime is 1188416023. The reversal of 1188416020 is 206148811.

It can be written as a sum of positive squares in 2 ways, for example, as 125395204 + 1063020816 = 11198^2 + 32604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188416023) 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, 243121 + ... + 247960.

It is an arithmetic number, because the mean of its divisors is an integer number (76199557).

Almost surely, 2^1188416020 is an apocalyptic number.

1188416020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1188416020 is an abundant number, since it is smaller than the sum of its proper divisors (1554768032).

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

1188416020 is a wasteful number, since it uses less digits than its factorization.

1188416020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491112 (or 491099 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1188416020 is about 34473.4103331829. The cubic root of 1188416020 is about 1059.2281137383.

The spelling of 1188416020 in words is "one billion, one hundred eighty-eight million, four hundred sixteen thousand, twenty".