1188405454628 has 24 divisors (see below), whose sum is σ = 2381651692224. Its totient is φ = 508279312800.

The previous prime is 1188405454619. The next prime is 1188405454651. The reversal of 1188405454628 is 8264545048811.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43207283 + ... + 43234778.

It is an arithmetic number, because the mean of its divisors is an integer number (99235487176).

Almost surely, 2^{1188405454628} is an apocalyptic number.

It is an amenable number.

1188405454628 is an abundant number, since it is smaller than the sum of its proper divisors (1193246237596).

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

1188405454628 is a wasteful number, since it uses less digits than its factorization.

1188405454628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86442563 (or 86442561 counting only the distinct ones).

The product of its (nonzero) digits is 9830400, while the sum is 56.

The spelling of 1188405454628 in words is "one trillion, one hundred eighty-eight billion, four hundred five million, four hundred fifty-four thousand, six hundred twenty-eight".