1379722890 has 384 divisors, whose sum is σ = 4567062528. Its totient is φ = 263208960.

The previous prime is 1379722889. The next prime is 1379722901. The reversal of 1379722890 is 982279731.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10070902 + ... + 10071038.

It is an arithmetic number, because the mean of its divisors is an integer number (11893392).

Almost surely, 2^1379722890 is an apocalyptic number.

1379722890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1379722890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2283531264).

1379722890 is an abundant number, since it is smaller than the sum of its proper divisors (3187339638).

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

1379722890 is a wasteful number, since it uses less digits than its factorization.

1379722890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1379722890 is about 37144.6212795339. The cubic root of 1379722890 is about 1113.2617556104.

The spelling of 1379722890 in words is "one billion, three hundred seventy-nine million, seven hundred twenty-two thousand, eight hundred ninety".