1266223015 has 8 divisors (see below), whose sum is σ = 1519760448. Its totient is φ = 1012783200.

The previous prime is 1266223003. The next prime is 1266223037. The reversal of 1266223015 is 5103226621.

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

It is not a de Polignac number, because 1266223015 - 2¹³ = 1266214823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8065 + ... + 50965.

It is an arithmetic number, because the mean of its divisors is an integer number (189970056).

Almost surely, 2^1266223015 is an apocalyptic number.

1266223015 is a deficient number, since it is larger than the sum of its proper divisors (253537433).

1266223015 is an equidigital number, since it uses as much as digits as its factorization.

1266223015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48809.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1266223015 is about 35584.0275264057. The cubic root of 1266223015 is about 1081.8575186825.

Adding to 1266223015 its reverse (5103226621), we get a palindrome (6369449636).

The spelling of 1266223015 in words is "one billion, two hundred sixty-six million, two hundred twenty-three thousand, fifteen".