1376386992 has 140 divisors (see below), whose sum is σ = 4025300400. Its totient is φ = 455704704.

The previous prime is 1376386969. The next prime is 1376386993. The reversal of 1376386992 is 2996836731.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1376386993) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2297509 + ... + 2298107.

Almost surely, 2^1376386992 is an apocalyptic number.

1376386992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1376386992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2012650200).

1376386992 is an abundant number, since it is smaller than the sum of its proper divisors (2648913408).

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

1376386992 is an equidigital number, since it uses as much as digits as its factorization.

1376386992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 801 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 1376386992 is about 37099.6899178416. The cubic root of 1376386992 is about 1112.3638157080.

The spelling of 1376386992 in words is "one billion, three hundred seventy-six million, three hundred eighty-six thousand, nine hundred ninety-two".