1381650616 has 8 divisors (see below), whose sum is σ = 2590594920. Its totient is φ = 690825304.

The previous prime is 1381650593. The next prime is 1381650659. The reversal of 1381650616 is 6160561831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 86353156 + ... + 86353171.

It is an arithmetic number, because the mean of its divisors is an integer number (323824365).

Almost surely, 2^1381650616 is an apocalyptic number.

It is an amenable number.

1381650616 is a deficient number, since it is larger than the sum of its proper divisors (1208944304).

1381650616 is a wasteful number, since it uses less digits than its factorization.

1381650616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172706333 (or 172706329 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1381650616 is about 37170.5611472305. The cubic root of 1381650616 is about 1113.7799912987.

The spelling of 1381650616 in words is "one billion, three hundred eighty-one million, six hundred fifty thousand, six hundred sixteen".