9523978149 has 12 divisors (see below), whose sum is σ = 14771884704. Its totient is φ = 5442273144.

The previous prime is 9523978067. The next prime is 9523978157. The reversal of 9523978149 is 9418793259.

It is not a de Polignac number, because 9523978149 - 2¹³ = 9523969957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9523978049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32394337 + ... + 32394630.

It is an arithmetic number, because the mean of its divisors is an integer number (1230990392).

Almost surely, 2^9523978149 is an apocalyptic number.

It is an amenable number.

9523978149 is a deficient number, since it is larger than the sum of its proper divisors (5247906555).

9523978149 is a wasteful number, since it uses less digits than its factorization.

9523978149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64788984 (or 64788977 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

The square root of 9523978149 is about 97590.8712380415. The cubic root of 9523978149 is about 2119.6921759214.

The spelling of 9523978149 in words is "nine billion, five hundred twenty-three million, nine hundred seventy-eight thousand, one hundred forty-nine".