149857611 has 4 divisors (see below), whose sum is σ = 199810152. Its totient is φ = 99905072.

The previous prime is 149857607. The next prime is 149857613. The reversal of 149857611 is 116758941.

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 149857611 - 2² = 149857607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149857613) 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, 24976266 + ... + 24976271.

It is an arithmetic number, because the mean of its divisors is an integer number (49952538).

Almost surely, 2^149857611 is an apocalyptic number.

149857611 is a deficient number, since it is larger than the sum of its proper divisors (49952541).

149857611 is an equidigital number, since it uses as much as digits as its factorization.

149857611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49952540.

The product of its digits is 60480, while the sum is 42.

The square root of 149857611 is about 12241.6343271640. The cubic root of 149857611 is about 531.1611081535.

The spelling of 149857611 in words is "one hundred forty-nine million, eight hundred fifty-seven thousand, six hundred eleven".