1401188988 has 48 divisors (see below), whose sum is σ = 3299917824. Its totient is φ = 462730560.

The previous prime is 1401188983. The next prime is 1401189007. The reversal of 1401188988 is 8898811041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401188983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633781 + ... + 635987.

It is an arithmetic number, because the mean of its divisors is an integer number (68748288).

Almost surely, 2^1401188988 is an apocalyptic number.

It is an amenable number.

1401188988 is an abundant number, since it is smaller than the sum of its proper divisors (1898728836).

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

1401188988 is a wasteful number, since it uses less digits than its factorization.

1401188988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682 (or 2680 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 48.

The square root of 1401188988 is about 37432.4590162068. The cubic root of 1401188988 is about 1119.0055447867.

The spelling of 1401188988 in words is "one billion, four hundred one million, one hundred eighty-eight thousand, nine hundred eighty-eight".