1387650967 has 4 divisors (see below), whose sum is σ = 1389063600. Its totient is φ = 1386238336.

The previous prime is 1387650949. The next prime is 1387650989. The reversal of 1387650967 is 7690567831.

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-1387650967 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 (1387654967) 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, 704842 + ... + 706807.

It is an arithmetic number, because the mean of its divisors is an integer number (347265900).

Almost surely, 2^1387650967 is an apocalyptic number.

1387650967 is a deficient number, since it is larger than the sum of its proper divisors (1412633).

1387650967 is an equidigital number, since it uses as much as digits as its factorization.

1387650967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412632.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 1387650967 is about 37251.1874575831. The cubic root of 1387650967 is about 1115.3900026569.

The spelling of 1387650967 in words is "one billion, three hundred eighty-seven million, six hundred fifty thousand, nine hundred sixty-seven".