1540222626 has 8 divisors (see below), whose sum is σ = 3080445264. Its totient is φ = 513407540.

The previous prime is 1540222609. The next prime is 1540222639. The reversal of 1540222626 is 6262220451.

It is a happy number.

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

1540222626 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1540222593 and 1540222602.

It is an unprimeable number.

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, 128351880 + ... + 128351891.

It is an arithmetic number, because the mean of its divisors is an integer number (385055658).

Almost surely, 2^1540222626 is an apocalyptic number.

1540222626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1540222626 is a wasteful number, since it uses less digits than its factorization.

1540222626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256703776.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1540222626 is about 39245.6701560822. The cubic root of 1540222626 is about 1154.8559944897.

The spelling of 1540222626 in words is "one billion, five hundred forty million, two hundred twenty-two thousand, six hundred twenty-six".