1379379380 has 12 divisors (see below), whose sum is σ = 2896696740. Its totient is φ = 551751744.

The previous prime is 1379379377. The next prime is 1379379383. The reversal of 1379379380 is 839739731.

It is an interprime number because it is at equal distance from previous prime (1379379377) and next prime (1379379383).

It can be written as a sum of positive squares in 2 ways, for example, as 816930724 + 562448656 = 28582^2 + 23716^2 .

It is a super-3 number, since 3×1379379380³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379379383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34484465 + ... + 34484504.

It is an arithmetic number, because the mean of its divisors is an integer number (241391395).

Almost surely, 2^1379379380 is an apocalyptic number.

1379379380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1379379380 is an abundant number, since it is smaller than the sum of its proper divisors (1517317360).

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

1379379380 is a wasteful number, since it uses less digits than its factorization.

1379379380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68968978 (or 68968976 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 50.

The square root of 1379379380 is about 37139.9970382336. The cubic root of 1379379380 is about 1113.1693582433.

The spelling of 1379379380 in words is "one billion, three hundred seventy-nine million, three hundred seventy-nine thousand, three hundred eighty".