2123498690 has 16 divisors (see below), whose sum is σ = 3988484928. Its totient is φ = 812468976.

The previous prime is 2123498669. The next prime is 2123498693. The reversal of 2123498690 is 968943212.

It is a super-2 number, since 2×2123498690² = 9018493372863432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2123498693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4616072 + ... + 4616531.

It is an arithmetic number, because the mean of its divisors is an integer number (249280308).

Almost surely, 2^2123498690 is an apocalyptic number.

2123498690 is a deficient number, since it is larger than the sum of its proper divisors (1864986238).

2123498690 is a wasteful number, since it uses less digits than its factorization.

2123498690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9232633.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 2123498690 is about 46081.4354160111. The cubic root of 2123498690 is about 1285.3379560963.

The spelling of 2123498690 in words is "two billion, one hundred twenty-three million, four hundred ninety-eight thousand, six hundred ninety".