149689181161 has 8 divisors (see below), whose sum is σ = 163609760384. Its totient is φ = 136112320080.

The previous prime is 149689181143. The next prime is 149689181179. The reversal of 149689181161 is 161181986941.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (149689181143) and next prime (149689181179).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149689181161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149689181111) 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, 85928625 + ... + 85930366.

It is an arithmetic number, because the mean of its divisors is an integer number (20451220048).

Almost surely, 2^149689181161 is an apocalyptic number.

It is an amenable number.

149689181161 is a deficient number, since it is larger than the sum of its proper divisors (13920579223).

149689181161 is a wasteful number, since it uses less digits than its factorization.

149689181161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171859071.

The product of its digits is 746496, while the sum is 55.

The spelling of 149689181161 in words is "one hundred forty-nine billion, six hundred eighty-nine million, one hundred eighty-one thousand, one hundred sixty-one".