1409441638 has 24 divisors (see below), whose sum is σ = 2334159576. Its totient is φ = 637808160.

The previous prime is 1409441623. The next prime is 1409441689. The reversal of 1409441638 is 8361449041.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1409441638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42106 + ... + 67762.

It is an arithmetic number, because the mean of its divisors is an integer number (97256649).

Almost surely, 2^1409441638 is an apocalyptic number.

1409441638 is a deficient number, since it is larger than the sum of its proper divisors (924717938).

1409441638 is a wasteful number, since it uses less digits than its factorization.

1409441638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25908 (or 25897 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1409441638 is about 37542.5310547917. The cubic root of 1409441638 is about 1121.1981326866.

The spelling of 1409441638 in words is "one billion, four hundred nine million, four hundred forty-one thousand, six hundred thirty-eight".