1381068515 has 16 divisors (see below), whose sum is σ = 1673765856. Its totient is φ = 1093920000.

The previous prime is 1381068503. The next prime is 1381068517. The reversal of 1381068515 is 5158601831.

It is a happy number.

It is not a de Polignac number, because 1381068515 - 2¹⁰ = 1381067491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381068517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213935 + ... + 220295.

It is an arithmetic number, because the mean of its divisors is an integer number (104610366).

Almost surely, 2^1381068515 is an apocalyptic number.

1381068515 is a deficient number, since it is larger than the sum of its proper divisors (292697341).

1381068515 is a wasteful number, since it uses less digits than its factorization.

1381068515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6790.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 1381068515 is about 37162.7301876490. The cubic root of 1381068515 is about 1113.6235543746.

The spelling of 1381068515 in words is "one billion, three hundred eighty-one million, sixty-eight thousand, five hundred fifteen".