921909629156 has 12 divisors (see below), whose sum is σ = 1613363775660. Its totient is φ = 460948550400.

The previous prime is 921909629143. The next prime is 921909629161. The reversal of 921909629156 is 651926909129.

It can be written as a sum of positive squares in 2 ways, for example, as 686024566756 + 235885062400 = 828266^2 + 485680^2 .

It is a junction number, because it is equal to n+sod(n) for n = 921909629095 and 921909629104.

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 3 ways as a sum of consecutive naturals, for example, 1226741 + ... + 1829948.

It is an arithmetic number, because the mean of its divisors is an integer number (134446981305).

Almost surely, 2^921909629156 is an apocalyptic number.

It is an amenable number.

921909629156 is a deficient number, since it is larger than the sum of its proper divisors (691454146504).

921909629156 is a wasteful number, since it uses less digits than its factorization.

921909629156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132094 (or 3132092 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 59.

The spelling of 921909629156 in words is "nine hundred twenty-one billion, nine hundred nine million, six hundred twenty-nine thousand, one hundred fifty-six".