23458291921 has 9 divisors (see below), whose sum is σ = 23704194441. Its totient is φ = 23214919092.

The previous prime is 23458291897. The next prime is 23458291931. The reversal of 23458291921 is 12919285432.

The square root of 23458291921 is 153161.

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

It is not a de Polignac number, because 23458291921 - 2¹¹ = 23458289873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23458291931) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15774840 + ... + 15776326.

Almost surely, 2^23458291921 is an apocalyptic number.

23458291921 is the 153161-st square number.

23458291921 is the 76581-st centered octagonal number.

It is an amenable number.

23458291921 is a deficient number, since it is larger than the sum of its proper divisors (245902520).

23458291921 is an frugal number, since it uses more digits than its factorization.

23458291921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180 (or 1590 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The spelling of 23458291921 in words is "twenty-three billion, four hundred fifty-eight million, two hundred ninety-one thousand, nine hundred twenty-one".