8156149323 has 32 divisors (see below), whose sum is σ = 13349568000. Its totient is φ = 4415348448.

The previous prime is 8156149319. The next prime is 8156149333. The reversal of 8156149323 is 3239416518.

It is not a de Polignac number, because 8156149323 - 2² = 8156149319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8156149333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189036 + ... + 228137.

It is an arithmetic number, because the mean of its divisors is an integer number (417174000).

Almost surely, 2^8156149323 is an apocalyptic number.

8156149323 is a deficient number, since it is larger than the sum of its proper divisors (5193418677).

8156149323 is a wasteful number, since it uses less digits than its factorization.

8156149323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417216 (or 417202 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 8156149323 is about 90311.4019545705. The cubic root of 8156149323 is about 2012.9286880096.

The spelling of 8156149323 in words is "eight billion, one hundred fifty-six million, one hundred forty-nine thousand, three hundred twenty-three".