1443994774 has 8 divisors (see below), whose sum is σ = 2173985568. Its totient is φ = 719332920.

The previous prime is 1443994757. The next prime is 1443994777. The reversal of 1443994774 is 4774993441.

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

It is a super-2 number, since 2×1443994774² = 4170241814678622152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443994777) 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, 1331557 + ... + 1332640.

It is an arithmetic number, because the mean of its divisors is an integer number (271748196).

Almost surely, 2^1443994774 is an apocalyptic number.

1443994774 is a deficient number, since it is larger than the sum of its proper divisors (729990794).

1443994774 is a wasteful number, since it uses less digits than its factorization.

1443994774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664470.

The product of its digits is 3048192, while the sum is 52.

The square root of 1443994774 is about 37999.9312367799. The cubic root of 1443994774 is about 1130.2865000437.

The spelling of 1443994774 in words is "one billion, four hundred forty-three million, nine hundred ninety-four thousand, seven hundred seventy-four".