9401624861 has 2 divisors, whose sum is σ = 9401624862. Its totient is φ = 9401624860.

The previous prime is 9401624857. The next prime is 9401624909. The reversal of 9401624861 is 1684261049.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9384765625 + 16859236 = 96875^2 + 4106^2 .

It is a cyclic number.

It is not a de Polignac number, because 9401624861 - 2² = 9401624857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9401624161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4700812430 + 4700812431.

It is an arithmetic number, because the mean of its divisors is an integer number (4700812431).

Almost surely, 2^9401624861 is an apocalyptic number.

It is an amenable number.

9401624861 is a deficient number, since it is larger than the sum of its proper divisors (1).

9401624861 is an equidigital number, since it uses as much as digits as its factorization.

9401624861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 9401624861 is about 96961.9763670275. The cubic root of 9401624861 is about 2110.5758901393.

The spelling of 9401624861 in words is "nine billion, four hundred one million, six hundred twenty-four thousand, eight hundred sixty-one".