1380587501 has 4 divisors (see below), whose sum is σ = 1380697500. Its totient is φ = 1380477504.

The previous prime is 1380587473. The next prime is 1380587531. The reversal of 1380587501 is 1057850831.

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 can be written as a sum of positive squares in 2 ways, for example, as 1159470601 + 221116900 = 34051^2 + 14870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380587501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380587531) 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, 33326 + ... + 62223.

It is an arithmetic number, because the mean of its divisors is an integer number (345174375).

Almost surely, 2^1380587501 is an apocalyptic number.

It is an amenable number.

1380587501 is a deficient number, since it is larger than the sum of its proper divisors (109999).

1380587501 is an equidigital number, since it uses as much as digits as its factorization.

1380587501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109998.

The product of its (nonzero) digits is 33600, while the sum is 38.

The square root of 1380587501 is about 37156.2578982330. The cubic root of 1380587501 is about 1113.4942509365.

The spelling of 1380587501 in words is "one billion, three hundred eighty million, five hundred eighty-seven thousand, five hundred one".