1188836628 has 48 divisors (see below), whose sum is σ = 3234940800. Its totient is φ = 339666432.

The previous prime is 1188836617. The next prime is 1188836647. The reversal of 1188836628 is 8266388811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140301 + ... + 148532.

It is an arithmetic number, because the mean of its divisors is an integer number (67394600).

Almost surely, 2^1188836628 is an apocalyptic number.

It is an amenable number.

1188836628 is an abundant number, since it is smaller than the sum of its proper divisors (2046104172).

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

1188836628 is a wasteful number, since it uses less digits than its factorization.

1188836628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288861 (or 288845 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 1188836628 is about 34479.5102633434. The cubic root of 1188836628 is about 1059.3530607999.

It can be divided in two parts, 11888 and 36628, that added together give a triangular number (48516 = T₃₁₁).

The spelling of 1188836628 in words is "one billion, one hundred eighty-eight million, eight hundred thirty-six thousand, six hundred twenty-eight".