9154736021 has 2 divisors, whose sum is σ = 9154736022. Its totient is φ = 9154736020.

The previous prime is 9154735949. The next prime is 9154736033. The reversal of 9154736021 is 1206374519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5361900625 + 3792835396 = 73225^2 + 61586^2 .

It is a cyclic number.

It is not a de Polignac number, because 9154736021 - 2²² = 9150541717 is a prime.

It is a super-2 number, since 2×9154736021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9154736081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4577368010 + 4577368011.

It is an arithmetic number, because the mean of its divisors is an integer number (4577368011).

Almost surely, 2^9154736021 is an apocalyptic number.

It is an amenable number.

9154736021 is a deficient number, since it is larger than the sum of its proper divisors (1).

9154736021 is an equidigital number, since it uses as much as digits as its factorization.

9154736021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 9154736021 is about 95680.3847243519. The cubic root of 9154736021 is about 2091.9370350218.

The spelling of 9154736021 in words is "nine billion, one hundred fifty-four million, seven hundred thirty-six thousand, twenty-one".