23893169890 has 16 divisors (see below), whose sum is σ = 44490730680. Its totient is φ = 9227706880.

The previous prime is 23893169831. The next prime is 23893169893. The reversal of 23893169890 is 9896139832.

It can be written as a sum of positive squares in 4 ways, for example, as 21139124449 + 2754045441 = 145393^2 + 52479^2 .

It is a super-2 number, since 2×23893169890² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (23893169893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41194831 + ... + 41195410.

Almost surely, 2^23893169890 is an apocalyptic number.

23893169890 is a deficient number, since it is larger than the sum of its proper divisors (20597560790).

23893169890 is a wasteful number, since it uses less digits than its factorization.

23893169890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82390277.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 23893169890 in words is "twenty-three billion, eight hundred ninety-three million, one hundred sixty-nine thousand, eight hundred ninety".