1378679292 has 120 divisors (see below), whose sum is σ = 3812109840. Its totient is φ = 433278720.

The previous prime is 1378679261. The next prime is 1378679299. The reversal of 1378679292 is 2929768731.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378679299) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1729438 + ... + 1730234.

It is an arithmetic number, because the mean of its divisors is an integer number (31767582).

Almost surely, 2^1378679292 is an apocalyptic number.

1378679292 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 1378679292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906054920).

1378679292 is an abundant number, since it is smaller than the sum of its proper divisors (2433430548).

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

1378679292 is a wasteful number, since it uses less digits than its factorization.

1378679292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1102 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 1378679292 is about 37130.5708547552. The cubic root of 1378679292 is about 1112.9810009762.

The spelling of 1378679292 in words is "one billion, three hundred seventy-eight million, six hundred seventy-nine thousand, two hundred ninety-two".