1409690638 has 16 divisors (see below), whose sum is σ = 2192942160. Its totient is φ = 678832000.

The previous prime is 1409690627. The next prime is 1409690641. The reversal of 1409690638 is 8360969041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7048 + ... + 53563.

It is an arithmetic number, because the mean of its divisors is an integer number (137058885).

Almost surely, 2^1409690638 is an apocalyptic number.

1409690638 is a deficient number, since it is larger than the sum of its proper divisors (783251522).

1409690638 is a wasteful number, since it uses less digits than its factorization.

1409690638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61043.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1409690638 is about 37545.8471471879. The cubic root of 1409690638 is about 1121.2641545515.

The spelling of 1409690638 in words is "one billion, four hundred nine million, six hundred ninety thousand, six hundred thirty-eight".