1188450900 has 432 divisors, whose sum is σ = 4793234880. Its totient is φ = 250387200.

The previous prime is 1188450889. The next prime is 1188450911. The reversal of 1188450900 is 90548811.

1188450900 is a `hidden beast` number, since 118 + 8 + 450 + 90 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1188450889) and next prime (1188450911).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1719555 + ... + 1720245.

Almost surely, 2^1188450900 is an apocalyptic number.

1188450900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1188450900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2396617440).

1188450900 is an abundant number, since it is smaller than the sum of its proper divisors (3604783980).

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

1188450900 is a wasteful number, since it uses less digits than its factorization.

1188450900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1188450900 is about 34473.9162266198. The cubic root of 1188450900 is about 1059.2384764156.

The spelling of 1188450900 in words is "one billion, one hundred eighty-eight million, four hundred fifty thousand, nine hundred".