1380648787 has 8 divisors (see below), whose sum is σ = 1578548736. Its totient is φ = 1182914952.

The previous prime is 1380648779. The next prime is 1380648799. The reversal of 1380648787 is 7878460831.

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

It is a cyclic number.

It is not a de Polignac number, because 1380648787 - 2³ = 1380648779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380648707) 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, 23173 + ... + 57430.

It is an arithmetic number, because the mean of its divisors is an integer number (197318592).

Almost surely, 2^1380648787 is an apocalyptic number.

1380648787 is a deficient number, since it is larger than the sum of its proper divisors (197899949).

1380648787 is an equidigital number, since it uses as much as digits as its factorization.

1380648787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83057.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 1380648787 is about 37157.0825953815. The cubic root of 1380648787 is about 1113.5107271586.

The spelling of 1380648787 in words is "one billion, three hundred eighty million, six hundred forty-eight thousand, seven hundred eighty-seven".