9139154640 has 960 divisors, whose sum is σ = 38692380672. Its totient is φ = 1761177600.

The previous prime is 9139154621. The next prime is 9139154663. The reversal of 9139154640 is 464519319.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 9139154592 and 9139154601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 172436854 + ... + 172436906.

Almost surely, 2^9139154640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9139154640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19346190336).

9139154640 is an abundant number, since it is smaller than the sum of its proper divisors (29553226032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9139154640 is a wasteful number, since it uses less digits than its factorization.

9139154640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 9139154640 is about 95598.9259353890. The cubic root of 9139154640 is about 2090.7495339000.

The spelling of 9139154640 in words is "nine billion, one hundred thirty-nine million, one hundred fifty-four thousand, six hundred forty".