1266942153 has 16 divisors (see below), whose sum is σ = 1830223296. Its totient is φ = 776455680.

The previous prime is 1266942151. The next prime is 1266942163. The reversal of 1266942153 is 3512496621.

It is not a de Polignac number, because 1266942153 - 2¹ = 1266942151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266942151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286668 + ... + 291053.

It is an arithmetic number, because the mean of its divisors is an integer number (114388956).

Almost surely, 2^1266942153 is an apocalyptic number.

It is an amenable number.

1266942153 is a deficient number, since it is larger than the sum of its proper divisors (563281143).

1266942153 is a wasteful number, since it uses less digits than its factorization.

1266942153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577784.

The product of its digits is 77760, while the sum is 39.

The square root of 1266942153 is about 35594.1308785592. The cubic root of 1266942153 is about 1082.0622897755.

The spelling of 1266942153 in words is "one billion, two hundred sixty-six million, nine hundred forty-two thousand, one hundred fifty-three".