1264153215 has 16 divisors (see below), whose sum is σ = 2178233568. Its totient is φ = 622352256.

The previous prime is 1264153193. The next prime is 1264153223. The reversal of 1264153215 is 5123514621.

It is not a de Polignac number, because 1264153215 - 2¹³ = 1264145023 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3241224 + ... + 3241613.

It is an arithmetic number, because the mean of its divisors is an integer number (136139598).

Almost surely, 2^1264153215 is an apocalyptic number.

1264153215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1264153215 is a deficient number, since it is larger than the sum of its proper divisors (914080353).

1264153215 is a wasteful number, since it uses less digits than its factorization.

1264153215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482858.

The product of its digits is 7200, while the sum is 30.

The square root of 1264153215 is about 35554.9323582538. The cubic root of 1264153215 is about 1081.2677200255.

Adding to 1264153215 its reverse (5123514621), we get a palindrome (6387667836).

It can be divided in two parts, 12641 and 53215, that added together give a palindrome (65856).

The spelling of 1264153215 in words is "one billion, two hundred sixty-four million, one hundred fifty-three thousand, two hundred fifteen".