91195642 has 4 divisors (see below), whose sum is σ = 136793466. Its totient is φ = 45597820.

The previous prime is 91195631. The next prime is 91195673. The reversal of 91195642 is 24659119.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 83010321 + 8185321 = 9111^2 + 2861^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22798909 + ... + 22798912.

Almost surely, 2^91195642 is an apocalyptic number.

91195642 is a deficient number, since it is larger than the sum of its proper divisors (45597824).

91195642 is a wasteful number, since it uses less digits than its factorization.

91195642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45597823.

The product of its digits is 19440, while the sum is 37.

The square root of 91195642 is about 9549.6409356583. The cubic root of 91195642 is about 450.1162530921.

The spelling of 91195642 in words is "ninety-one million, one hundred ninety-five thousand, six hundred forty-two".