1381533467 has 4 divisors (see below), whose sum is σ = 1392079656. Its totient is φ = 1370987280.

The previous prime is 1381533451. The next prime is 1381533473. The reversal of 1381533467 is 7643351831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7643351831 = 79 ⋅96751289.

It is a cyclic number.

It is not a de Polignac number, because 1381533467 - 2⁴ = 1381533451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381533437) 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, 5272898 + ... + 5273159.

It is an arithmetic number, because the mean of its divisors is an integer number (348019914).

Almost surely, 2^1381533467 is an apocalyptic number.

1381533467 is a deficient number, since it is larger than the sum of its proper divisors (10546189).

1381533467 is a wasteful number, since it uses less digits than its factorization.

1381533467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546188.

The product of its digits is 181440, while the sum is 41.

The square root of 1381533467 is about 37168.9852834322. The cubic root of 1381533467 is about 1113.7485115843.

The spelling of 1381533467 in words is "one billion, three hundred eighty-one million, five hundred thirty-three thousand, four hundred sixty-seven".