149015843 has 4 divisors (see below), whose sum is σ = 149634408. Its totient is φ = 148397280.

The previous prime is 149015821. The next prime is 149015851. The reversal of 149015843 is 348510941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348510941 = 83 ⋅4198927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149015843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149015813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308921 + ... + 309402.

It is an arithmetic number, because the mean of its divisors is an integer number (37408602).

Almost surely, 2^149015843 is an apocalyptic number.

149015843 is a deficient number, since it is larger than the sum of its proper divisors (618565).

149015843 is an equidigital number, since it uses as much as digits as its factorization.

149015843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618564.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 149015843 is about 12207.2045530498. The cubic root of 149015843 is about 530.1647085091.

The spelling of 149015843 in words is "one hundred forty-nine million, fifteen thousand, eight hundred forty-three".