1449740638 has 8 divisors (see below), whose sum is σ = 2174801832. Its totient is φ = 724806696.

The previous prime is 1449740557. The next prime is 1449740651. The reversal of 1449740638 is 8360479441.

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

It is a congruent number.

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, 5356 + ... + 54112.

It is an arithmetic number, because the mean of its divisors is an integer number (271850229).

Almost surely, 2^1449740638 is an apocalyptic number.

1449740638 is a deficient number, since it is larger than the sum of its proper divisors (725061194).

1449740638 is a wasteful number, since it uses less digits than its factorization.

1449740638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63626.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 1449740638 is about 38075.4597871122. The cubic root of 1449740638 is about 1131.7837070676.

The spelling of 1449740638 in words is "one billion, four hundred forty-nine million, seven hundred forty thousand, six hundred thirty-eight".