149073691 has 8 divisors (see below), whose sum is σ = 163173584. Its totient is φ = 135349920.

The previous prime is 149073689. The next prime is 149073713. The reversal of 149073691 is 196370941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149073691 - 2¹ = 149073689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149073641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93201 + ... + 94786.

It is an arithmetic number, because the mean of its divisors is an integer number (20396698).

Almost surely, 2^149073691 is an apocalyptic number.

149073691 is a deficient number, since it is larger than the sum of its proper divisors (14099893).

149073691 is a wasteful number, since it uses less digits than its factorization.

149073691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188061.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 149073691 is about 12209.5737435834. The cubic root of 149073691 is about 530.2333030060.

The spelling of 149073691 in words is "one hundred forty-nine million, seventy-three thousand, six hundred ninety-one".