1444701481 has 4 divisors (see below), whose sum is σ = 1458203472. Its totient is φ = 1431199492.

The previous prime is 1444701473. The next prime is 1444701493. The reversal of 1444701481 is 1841074441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1841074441 = 67 ⋅27478723.

It is a cyclic number.

It is not a de Polignac number, because 1444701481 - 2³ = 1444701473 is a prime.

It is a super-2 number, since 2×1444701481² = 4174324738407186722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444701431) 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, 6750835 + ... + 6751048.

It is an arithmetic number, because the mean of its divisors is an integer number (364550868).

Almost surely, 2^1444701481 is an apocalyptic number.

It is an amenable number.

1444701481 is a deficient number, since it is larger than the sum of its proper divisors (13501991).

1444701481 is a wasteful number, since it uses less digits than its factorization.

1444701481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13501990.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 1444701481 is about 38009.2288924677. The cubic root of 1444701481 is about 1130.4708615388.

The spelling of 1444701481 in words is "one billion, four hundred forty-four million, seven hundred one thousand, four hundred eighty-one".