1381724534 has 8 divisors (see below), whose sum is σ = 2072774448. Its totient is φ = 690799720.

The previous prime is 1381724527. The next prime is 1381724537. The reversal of 1381724534 is 4354271831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381724537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4544 + ... + 52764.

It is an arithmetic number, because the mean of its divisors is an integer number (259096806).

Almost surely, 2^1381724534 is an apocalyptic number.

1381724534 is a deficient number, since it is larger than the sum of its proper divisors (691049914).

1381724534 is a wasteful number, since it uses less digits than its factorization.

1381724534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62550.

The product of its digits is 80640, while the sum is 38.

The square root of 1381724534 is about 37171.5554423002. Note that the first 3 decimals coincide. The cubic root of 1381724534 is about 1113.7998532716.

The spelling of 1381724534 in words is "one billion, three hundred eighty-one million, seven hundred twenty-four thousand, five hundred thirty-four".