9413495921 has 2 divisors, whose sum is σ = 9413495922. Its totient is φ = 9413495920.

The previous prime is 9413495911. The next prime is 9413495941. The reversal of 9413495921 is 1295943149.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7578573025 + 1834922896 = 87055^2 + 42836^2 .

It is a cyclic number.

It is not a de Polignac number, because 9413495921 - 2²² = 9409301617 is a prime.

It is a super-2 number, since 2×9413495921² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9413495911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4706747960 + 4706747961.

It is an arithmetic number, because the mean of its divisors is an integer number (4706747961).

Almost surely, 2^9413495921 is an apocalyptic number.

It is an amenable number.

9413495921 is a deficient number, since it is larger than the sum of its proper divisors (1).

9413495921 is an equidigital number, since it uses as much as digits as its factorization.

9413495921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The square root of 9413495921 is about 97023.1720827556. The cubic root of 9413495921 is about 2111.4638300988.

The spelling of 9413495921 in words is "nine billion, four hundred thirteen million, four hundred ninety-five thousand, nine hundred twenty-one".