1380953281 has 16 divisors (see below), whose sum is σ = 1479081600. Its totient is φ = 1286448768.

The previous prime is 1380953279. The next prime is 1380953303. The reversal of 1380953281 is 1823590831.

It is a cyclic number.

It is not a de Polignac number, because 1380953281 - 2¹ = 1380953279 is a prime.

It is a super-2 number, since 2×1380953281² = 3814063928609329922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380953381) 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, 132115 + ... + 142183.

It is an arithmetic number, because the mean of its divisors is an integer number (92442600).

Almost surely, 2^1380953281 is an apocalyptic number.

It is an amenable number.

1380953281 is a deficient number, since it is larger than the sum of its proper divisors (98128319).

1380953281 is a wasteful number, since it uses less digits than its factorization.

1380953281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1380953281 is about 37161.1797579140. The cubic root of 1380953281 is about 1113.5925805635.

It can be divided in two parts, 138095 and 3281, that added together give a square (141376 = 376²).

The spelling of 1380953281 in words is "one billion, three hundred eighty million, nine hundred fifty-three thousand, two hundred eighty-one".