1566440022 has 16 divisors (see below), whose sum is σ = 3580434432. Its totient is φ = 447554280.

The previous prime is 1566440021. The next prime is 1566440033. The reversal of 1566440022 is 2200446651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566440021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18648054 + ... + 18648137.

It is an arithmetic number, because the mean of its divisors is an integer number (223777152).

Almost surely, 2^1566440022 is an apocalyptic number.

1566440022 is an abundant number, since it is smaller than the sum of its proper divisors (2013994410).

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

1566440022 is a wasteful number, since it uses less digits than its factorization.

1566440022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37296203.

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

The square root of 1566440022 is about 39578.2771479507. The cubic root of 1566440022 is about 1161.3717477040.

Adding to 1566440022 its reverse (2200446651), we get a palindrome (3766886673).

The spelling of 1566440022 in words is "one billion, five hundred sixty-six million, four hundred forty thousand, twenty-two".