2123929766 has 16 divisors (see below), whose sum is σ = 3652889856. Its totient is φ = 907288776.

The previous prime is 2123929747. The next prime is 2123929771. The reversal of 2123929766 is 6679293212.

It is a super-2 number, since 2×2123929766² = 9022155301801629512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2123929766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242786 + ... + 251381.

It is an arithmetic number, because the mean of its divisors is an integer number (228305616).

Almost surely, 2^2123929766 is an apocalyptic number.

2123929766 is a deficient number, since it is larger than the sum of its proper divisors (1528960090).

2123929766 is a wasteful number, since it uses less digits than its factorization.

2123929766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494483.

The product of its digits is 489888, while the sum is 47.

The square root of 2123929766 is about 46086.1125069147. The cubic root of 2123929766 is about 1285.4249259099.

The spelling of 2123929766 in words is "two billion, one hundred twenty-three million, nine hundred twenty-nine thousand, seven hundred sixty-six".