1386119988 has 72 divisors (see below), whose sum is σ = 3945666816. Its totient is φ = 406483200.

The previous prime is 1386119983. The next prime is 1386119993. The reversal of 1386119988 is 8899116831.

1386119988 is a `hidden beast` number, since 13 + 8 + 611 + 9 + 9 + 8 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1386119983) and next prime (1386119993).

It is a super-2 number, since 2×1386119988² = 3842657242266240288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386119983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44181 + ... + 68732.

It is an arithmetic number, because the mean of its divisors is an integer number (54800928).

Almost surely, 2^1386119988 is an apocalyptic number.

1386119988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1386119988 is an abundant number, since it is smaller than the sum of its proper divisors (2559546828).

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

1386119988 is a wasteful number, since it uses less digits than its factorization.

1386119988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112965 (or 112960 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The square root of 1386119988 is about 37230.6323878604. The cubic root of 1386119988 is about 1114.9796528156.

The spelling of 1386119988 in words is "one billion, three hundred eighty-six million, one hundred nineteen thousand, nine hundred eighty-eight".