44019581490 has 32 divisors (see below), whose sum is σ = 117385551360. Its totient is φ = 11738554992.

The previous prime is 44019581479. The next prime is 44019581497. The reversal of 44019581490 is 9418591044.

It is a happy number.

44019581490 is a `hidden beast` number, since 440 + 1 + 95 + 81 + 49 + 0 = 666.

It is a super-3 number, since 3×44019581490³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (44019581497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81517474 + ... + 81518013.

It is an arithmetic number, because the mean of its divisors is an integer number (3668298480).

Almost surely, 2^44019581490 is an apocalyptic number.

44019581490 is an abundant number, since it is smaller than the sum of its proper divisors (73365969870).

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

44019581490 is a wasteful number, since it uses less digits than its factorization.

44019581490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163035503 (or 163035497 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 44019581490 in words is "forty-four billion, nineteen million, five hundred eighty-one thousand, four hundred ninety".