1376800645 has 8 divisors (see below), whose sum is σ = 1802357280. Its totient is φ = 1001309520.

The previous prime is 1376800643. The next prime is 1376800651. The reversal of 1376800645 is 5460086731.

It is a happy number.

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

It is not a de Polignac number, because 1376800645 - 2¹ = 1376800643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1376800598 and 1376800607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376800643) 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, 12516315 + ... + 12516424.

It is an arithmetic number, because the mean of its divisors is an integer number (225294660).

Almost surely, 2^1376800645 is an apocalyptic number.

It is an amenable number.

1376800645 is a deficient number, since it is larger than the sum of its proper divisors (425556635).

1376800645 is a wasteful number, since it uses less digits than its factorization.

1376800645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25032755.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1376800645 is about 37105.2643839119. The cubic root of 1376800645 is about 1112.4752394439.

The spelling of 1376800645 in words is "one billion, three hundred seventy-six million, eight hundred thousand, six hundred forty-five".