19490283838 has 8 divisors (see below), whose sum is σ = 29242878480. Its totient is φ = 9742657680.

The previous prime is 19490283821. The next prime is 19490283859. The reversal of 19490283838 is 83838209491.

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, 1232298 + ... + 1248013.

It is an arithmetic number, because the mean of its divisors is an integer number (3655359810).

Almost surely, 2^19490283838 is an apocalyptic number.

19490283838 is a deficient number, since it is larger than the sum of its proper divisors (9752594642).

19490283838 is a wasteful number, since it uses less digits than its factorization.

19490283838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484242.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 19490283838 in words is "nineteen billion, four hundred ninety million, two hundred eighty-three thousand, eight hundred thirty-eight".