9816894157 has 16 divisors (see below), whose sum is σ = 11369021440. Its totient is φ = 8302340592.

The previous prime is 9816894083. The next prime is 9816894167. The reversal of 9816894157 is 7514986189.

It is not a de Polignac number, because 9816894157 - 2¹⁹ = 9816369869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9816894167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947668 + ... + 957970.

It is an arithmetic number, because the mean of its divisors is an integer number (710563840).

Almost surely, 2^9816894157 is an apocalyptic number.

It is an amenable number.

9816894157 is a deficient number, since it is larger than the sum of its proper divisors (1552127283).

9816894157 is a wasteful number, since it uses less digits than its factorization.

9816894157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112.

The product of its digits is 4354560, while the sum is 58.

The square root of 9816894157 is about 99080.2410019273. The cubic root of 9816894157 is about 2141.2039515437.

The spelling of 9816894157 in words is "nine billion, eight hundred sixteen million, eight hundred ninety-four thousand, one hundred fifty-seven".