91418654 has 4 divisors (see below), whose sum is σ = 137127984. Its totient is φ = 45709326.

The previous prime is 91418651. The next prime is 91418669. The reversal of 91418654 is 45681419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45681419 = 7 ⋅6525917.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91418651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22854662 + ... + 22854665.

It is an arithmetic number, because the mean of its divisors is an integer number (34281996).

Almost surely, 2^91418654 is an apocalyptic number.

91418654 is a deficient number, since it is larger than the sum of its proper divisors (45709330).

91418654 is a wasteful number, since it uses less digits than its factorization.

91418654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45709329.

The product of its digits is 34560, while the sum is 38.

The square root of 91418654 is about 9561.3102658579. The cubic root of 91418654 is about 450.4828627592.

The spelling of 91418654 in words is "ninety-one million, four hundred eighteen thousand, six hundred fifty-four".