1379381545 has 8 divisors (see below), whose sum is σ = 1655641800. Its totient is φ = 1103249280.

The previous prime is 1379381503. The next prime is 1379381567. The reversal of 1379381545 is 5451839731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 200420649 + 1178960896 = 14157^2 + 34336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1379381545 - 2¹¹ = 1379379497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1379381495 and 1379381504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6426 + ... + 52915.

It is an arithmetic number, because the mean of its divisors is an integer number (206955225).

Almost surely, 2^1379381545 is an apocalyptic number.

It is an amenable number.

1379381545 is a deficient number, since it is larger than the sum of its proper divisors (276260255).

1379381545 is an equidigital number, since it uses as much as digits as its factorization.

1379381545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63995.

The product of its digits is 453600, while the sum is 46.

The square root of 1379381545 is about 37140.0261846973. The cubic root of 1379381545 is about 1113.1699406334.

The spelling of 1379381545 in words is "one billion, three hundred seventy-nine million, three hundred eighty-one thousand, five hundred forty-five".