91636959154 has 32 divisors (see below), whose sum is σ = 156765052080. Its totient is φ = 39798853632.

The previous prime is 91636959107. The next prime is 91636959157. The reversal of 91636959154 is 45195963619.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 19072991025 + 72563968129 = 138105^2 + 269377^2 .

It is not an unprimeable number, because it can be changed into a prime (91636959157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2933932 + ... + 2965000.

Almost surely, 2^91636959154 is an apocalyptic number.

91636959154 is a deficient number, since it is larger than the sum of its proper divisors (65128092926).

91636959154 is a wasteful number, since it uses less digits than its factorization.

91636959154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37774.

The product of its digits is 7873200, while the sum is 58.

The spelling of 91636959154 in words is "ninety-one billion, six hundred thirty-six million, nine hundred fifty-nine thousand, one hundred fifty-four".