1379605645 has 8 divisors (see below), whose sum is σ = 1806029280. Its totient is φ = 1003349520.

The previous prime is 1379605621. The next prime is 1379605649. The reversal of 1379605645 is 5465069731.

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

It is not a de Polignac number, because 1379605645 - 2⁹ = 1379605133 is a prime.

It is a super-3 number, since 3×1379605645³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1379605595 and 1379605604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379605649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12541815 + ... + 12541924.

It is an arithmetic number, because the mean of its divisors is an integer number (225753660).

Almost surely, 2^1379605645 is an apocalyptic number.

It is an amenable number.

1379605645 is a deficient number, since it is larger than the sum of its proper divisors (426423635).

1379605645 is a wasteful number, since it uses less digits than its factorization.

1379605645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25083755.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 1379605645 is about 37143.0430228865. The cubic root of 1379605645 is about 1113.2302207583.

The spelling of 1379605645 in words is "one billion, three hundred seventy-nine million, six hundred five thousand, six hundred forty-five".