1188270320420 has 48 divisors (see below), whose sum is σ = 2627359761600. Its totient is φ = 450179291520.

The previous prime is 1188270320387. The next prime is 1188270320467. The reversal of 1188270320420 is 240230728811.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 1138190 + ... + 1916250.

It is an arithmetic number, because the mean of its divisors is an integer number (54736661700).

Almost surely, 2^{1188270320420} is an apocalyptic number.

1188270320420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1188270320420 is an abundant number, since it is smaller than the sum of its proper divisors (1439089441180).

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

1188270320420 is a wasteful number, since it uses less digits than its factorization.

1188270320420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782108 (or 782106 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 1188270320420 in words is "one trillion, one hundred eighty-eight billion, two hundred seventy million, three hundred twenty thousand, four hundred twenty".