1481821738 has 8 divisors (see below), whose sum is σ = 2225024640. Its totient is φ = 740146860.

The previous prime is 1481821709. The next prime is 1481821741. The reversal of 1481821738 is 8371281841.

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

It is a super-3 number, since 3×1481821738³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1481821694 and 1481821703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379578 + ... + 383461.

It is an arithmetic number, because the mean of its divisors is an integer number (278128080).

Almost surely, 2^1481821738 is an apocalyptic number.

1481821738 is a deficient number, since it is larger than the sum of its proper divisors (743202902).

1481821738 is an equidigital number, since it uses as much as digits as its factorization.

1481821738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764012.

The product of its digits is 86016, while the sum is 43.

The square root of 1481821738 is about 38494.4377540444. The cubic root of 1481821738 is about 1140.0712323398.

The spelling of 1481821738 in words is "one billion, four hundred eighty-one million, eight hundred twenty-one thousand, seven hundred thirty-eight".