146991107 has 4 divisors (see below), whose sum is σ = 147096840. Its totient is φ = 146885376.

The previous prime is 146991083. The next prime is 146991127. The reversal of 146991107 is 701199641.

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

It is a cyclic number.

It is not a de Polignac number, because 146991107 - 2²² = 142796803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146991127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50753 + ... + 53570.

It is an arithmetic number, because the mean of its divisors is an integer number (36774210).

Almost surely, 2^146991107 is an apocalyptic number.

146991107 is a deficient number, since it is larger than the sum of its proper divisors (105733).

146991107 is a wasteful number, since it uses less digits than its factorization.

146991107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105732.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 146991107 is about 12123.9889062965. The cubic root of 146991107 is about 527.7525659494.

The spelling of 146991107 in words is "one hundred forty-six million, nine hundred ninety-one thousand, one hundred seven".