1226385700929 has 45 divisors (see below), whose sum is σ = 1897806616563. Its totient is φ = 789211645488.

The previous prime is 1226385700921. The next prime is 1226385700937. The reversal of 1226385700929 is 9290075836221.

The square root of 1226385700929 is 1107423.

It is a perfect power (a square), and thus also a powerful number.

1226385700929 is a `hidden beast` number, since 1 + 2 + 2 + 63 + 8 + 570 + 0 + 9 + 2 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1226385700921) and next prime (1226385700937).

It can be written as a sum of positive squares in only one way, i.e., 643086913329 + 583298787600 = 801927^2 + 763740^2 .

It is not a de Polignac number, because 1226385700929 - 2³ = 1226385700921 is a prime.

It is a super-2 number, since 2×1226385700929² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1226385700921) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 289035282 + ... + 289039524.

Almost surely, 2^{1226385700929} is an apocalyptic number.

1226385700929 is the 1107423-rd square number.

1226385700929 is the 553712-nd centered octagonal number.

It is an amenable number.

1226385700929 is a deficient number, since it is larger than the sum of its proper divisors (671420915634).

1226385700929 is an frugal number, since it uses more digits than its factorization.

1226385700929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8556 (or 4275 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 1226385700929 in words is "one trillion, two hundred twenty-six billion, three hundred eighty-five million, seven hundred thousand, nine hundred twenty-nine".