991483156 has 24 divisors (see below), whose sum is σ = 1870968960. Its totient is φ = 458193600.

The previous prime is 991483151. The next prime is 991483169. The reversal of 991483156 is 651384199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991483151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155980 + ... + 162211.

It is an arithmetic number, because the mean of its divisors is an integer number (77957040).

Almost surely, 2^991483156 is an apocalyptic number.

It is an amenable number.

991483156 is a deficient number, since it is larger than the sum of its proper divisors (879485804).

991483156 is a wasteful number, since it uses less digits than its factorization.

991483156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318255 (or 318253 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 991483156 is about 31487.8255203499. The cubic root of 991483156 is about 997.1529540216.

The spelling of 991483156 in words is "nine hundred ninety-one million, four hundred eighty-three thousand, one hundred fifty-six".