1540020022 has 8 divisors (see below), whose sum is σ = 2312519400. Its totient is φ = 769180224.

The previous prime is 1540020019. The next prime is 1540020029. The reversal of 1540020022 is 2200200451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1540019978 and 1540020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412572 + ... + 416287.

It is an arithmetic number, because the mean of its divisors is an integer number (289064925).

Almost surely, 2^1540020022 is an apocalyptic number.

1540020022 is a deficient number, since it is larger than the sum of its proper divisors (772499378).

1540020022 is an equidigital number, since it uses as much as digits as its factorization.

1540020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829790.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1540020022 is about 39243.0888437697. The cubic root of 1540020022 is about 1154.8053549046.

Adding to 1540020022 its reverse (2200200451), we get a palindrome (3740220473).

The spelling of 1540020022 in words is "one billion, five hundred forty million, twenty thousand, twenty-two".