1381630567 has 4 divisors (see below), whose sum is σ = 1395044560. Its totient is φ = 1368216576.

The previous prime is 1381630561. The next prime is 1381630609. The reversal of 1381630567 is 7650361831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381630567 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 (1381630561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6706842 + ... + 6707047.

It is an arithmetic number, because the mean of its divisors is an integer number (348761140).

Almost surely, 2^1381630567 is an apocalyptic number.

1381630567 is a deficient number, since it is larger than the sum of its proper divisors (13413993).

1381630567 is a wasteful number, since it uses less digits than its factorization.

1381630567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13413992.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1381630567 is about 37170.2914570225. The cubic root of 1381630567 is about 1113.7746039543.

The spelling of 1381630567 in words is "one billion, three hundred eighty-one million, six hundred thirty thousand, five hundred sixty-seven".