16619226438 has 16 divisors (see below), whose sum is σ = 33253539840. Its totient is φ = 5537227656.

The previous prime is 16619226427. The next prime is 16619226457. The reversal of 16619226438 is 83462291661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614278 + ... + 640761.

It is an arithmetic number, because the mean of its divisors is an integer number (2078346240).

Almost surely, 2^16619226438 is an apocalyptic number.

16619226438 is an abundant number, since it is smaller than the sum of its proper divisors (16634313402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16619226438 is a wasteful number, since it uses less digits than its factorization.

16619226438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257251.

The product of its digits is 746496, while the sum is 48.

The spelling of 16619226438 in words is "sixteen billion, six hundred nineteen million, two hundred twenty-six thousand, four hundred thirty-eight".