11888913492 has 18 divisors (see below), whose sum is σ = 30052531418. Its totient is φ = 3962971152.

The previous prime is 11888913479. The next prime is 11888913493. The reversal of 11888913492 is 29431988811.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10682462736 + 1206450756 = 103356^2 + 34734^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11888913493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165123763 + ... + 165123834.

Almost surely, 2^11888913492 is an apocalyptic number.

11888913492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11888913492 is an abundant number, since it is smaller than the sum of its proper divisors (18163617926).

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

11888913492 is a wasteful number, since it uses less digits than its factorization.

11888913492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330247607 (or 330247602 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The spelling of 11888913492 in words is "eleven billion, eight hundred eighty-eight million, nine hundred thirteen thousand, four hundred ninety-two".