1045221378 has 8 divisors (see below), whose sum is σ = 2090442768. Its totient is φ = 348407124.

The previous prime is 1045221371. The next prime is 1045221379. The reversal of 1045221378 is 8731225401.

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

1045221378 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1045221371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87101776 + ... + 87101787.

It is an arithmetic number, because the mean of its divisors is an integer number (261305346).

Almost surely, 2^1045221378 is an apocalyptic number.

1045221378 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.

1045221378 is a wasteful number, since it uses less digits than its factorization.

1045221378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174203568.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1045221378 is about 32329.8836682101. The cubic root of 1045221378 is about 1014.8521152853.

Adding to 1045221378 its reverse (8731225401), we get a palindrome (9776446779).

The spelling of 1045221378 in words is "one billion, forty-five million, two hundred twenty-one thousand, three hundred seventy-eight".