81496150 has 12 divisors (see below), whose sum is σ = 151582932. Its totient is φ = 32598440.

The previous prime is 81496141. The next prime is 81496159. The reversal of 81496150 is 5169418.

It is an interprime number because it is at equal distance from previous prime (81496141) and next prime (81496159).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81496159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 814912 + ... + 815011.

It is an arithmetic number, because the mean of its divisors is an integer number (12631911).

Almost surely, 2^81496150 is an apocalyptic number.

81496150 is a deficient number, since it is larger than the sum of its proper divisors (70086782).

81496150 is a wasteful number, since it uses less digits than its factorization.

81496150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629935 (or 1629930 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 81496150 is about 9027.5218083370. The cubic root of 81496150 is about 433.5564958361.

The spelling of 81496150 in words is "eighty-one million, four hundred ninety-six thousand, one hundred fifty".