10019449404 has 18 divisors (see below), whose sum is σ = 25326941640. Its totient is φ = 3339816456.

The previous prime is 10019449403. The next prime is 10019449441. The reversal of 10019449404 is 40494491001.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 278318039 = 10019449404 / (1 + 0 + 0 + 1 + 9 + 4 + 4 + 9 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10019449403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139158984 + ... + 139159055.

Almost surely, 2^10019449404 is an apocalyptic number.

It is an amenable number.

10019449404 is an abundant number, since it is smaller than the sum of its proper divisors (15307492236).

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

10019449404 is a wasteful number, since it uses less digits than its factorization.

10019449404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278318049 (or 278318044 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 10019449404 in words is "ten billion, nineteen million, four hundred forty-nine thousand, four hundred four".