1923408481 has 8 divisors (see below), whose sum is σ = 1976432744. Its totient is φ = 1870439040.

The previous prime is 1923408479. The next prime is 1923408491. The reversal of 1923408481 is 1848043291.

It can be written as a sum of positive squares in 4 ways, for example, as 976000081 + 947408400 = 31241^2 + 30780^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1923408481 - 2¹ = 1923408479 is a prime.

It is a super-2 number, since 2×1923408481² = 7399000369565454722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1923408491) 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, 63301 + ... + 88621.

It is an arithmetic number, because the mean of its divisors is an integer number (247054093).

Almost surely, 2^1923408481 is an apocalyptic number.

1923408481 is the 25321-st octagonal number.

It is an amenable number.

1923408481 is a deficient number, since it is larger than the sum of its proper divisors (53024263).

1923408481 is a wasteful number, since it uses less digits than its factorization.

1923408481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27411.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1923408481 is about 43856.6811443821. The cubic root of 1923408481 is about 1243.6280497385.

The spelling of 1923408481 in words is "one billion, nine hundred twenty-three million, four hundred eight thousand, four hundred eighty-one".