1380474787 has 4 divisors (see below), whose sum is σ = 1380550456. Its totient is φ = 1380399120.

The previous prime is 1380474737. The next prime is 1380474793. The reversal of 1380474787 is 7874740831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1380474787 - 2²³ = 1372086179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1380474787.

It is not an unprimeable number, because it can be changed into a prime (1380474727) 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, 8212 + ... + 53182.

It is an arithmetic number, because the mean of its divisors is an integer number (345137614).

Almost surely, 2^1380474787 is an apocalyptic number.

1380474787 is a deficient number, since it is larger than the sum of its proper divisors (75669).

1380474787 is an equidigital number, since it uses as much as digits as its factorization.

1380474787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75668.

The product of its (nonzero) digits is 1053696, while the sum is 49.

The square root of 1380474787 is about 37154.7411106577. The cubic root of 1380474787 is about 1113.4639474590.

The spelling of 1380474787 in words is "one billion, three hundred eighty million, four hundred seventy-four thousand, seven hundred eighty-seven".