19244269990 has 16 divisors (see below), whose sum is σ = 37788748560. Its totient is φ = 6997916320.

The previous prime is 19244269987. The next prime is 19244269997. The reversal of 19244269990 is 9996244291.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19244269997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87473845 + ... + 87474064.

It is an arithmetic number, because the mean of its divisors is an integer number (2361796785).

Almost surely, 2^19244269990 is an apocalyptic number.

19244269990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19244269990 is a deficient number, since it is larger than the sum of its proper divisors (18544478570).

19244269990 is a wasteful number, since it uses less digits than its factorization.

19244269990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174947927.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 19244269990 in words is "nineteen billion, two hundred forty-four million, two hundred sixty-nine thousand, nine hundred ninety".